Pro-Choice?

[KomissarSteve]

JGG, I'd advise you not to get into this with her. She seems to think that intaking oxygen from the mother's bloodstream is the same thing as "breathing" and is extremely stubborn on this issue. So, unless you want to frustrate yourself, I'd ignore this mistaken notion of hers.

Sage advice. She...doesn't seem to want to really discuss the issue, so much as she wants to spew out right-wing talking points.

 

[Zeena]

Babies breath in the womb, which is MEDICALLY DOCUMENTED.. Therfore, according to God's Word in the Scriptures, God has both called them into existance and has a plan for each one.

Here's another incidence where a simple "in my opinion" would be beneficial. It's just three words, it's not like it's going to kill you to type them or anything.

Not that I need to have the last word..

But when facts are presented in a scientific manner, with evidences and such, does one just assume it's hypothesis is false until contradicting evidence comes along?

You believe in the fact that smoking causes cancer don't you?

WHY?

Because it's MEDICALLY PROVEN! :LOL:
So don't go telling me medical science is not trustworthy in THIS regard, not when it is NOT presented as merely speculation, but indeed, as FACT!

I've not only posted numerous medical journals which say babies both inhale and exhale oxygfen while in the womb, regardless of how far along that baby is..

I've also posted numerous Scriptures to back the statement that LIFE consists of breath, and deduced [FROM THE EVIDENCES] that babies are in fact a God-Given Life, even while still in the womb, since they BREATHE..

Look up, examine the posts for youself and you will come to the same conclusion if you are willing to examine them in a scientific manner

Therefore, any CHRISTIAN [or JEW, for that matter] who is to say a 'fetus' is not a baby, or that a baby is not alive whilst in it's mothers womb contradicts the Word of God in the Scriptures! =P

 

[HannahBanana]

Not that I need to have the last word..

But when facts are presented in a scientific manner, with evidences and such, does one just assume it's hypothesis is false until contradicting evidence comes along?

You believe in the fact that smoking causes cancer don't you?

WHY?

Because it's MEDICALLY PROVEN! :LOL:
So don't go telling me medical science is not trustworthy in THIS regard, not when it is NOT presented as merely speculation, but indeed, as FACT!

I've not only posted numerous medical journals which say babies both inhale and exhale oxygfen while in the womb, regardless of how far along that baby is..

I've also posted numerous Scriptures to back the statement that LIFE consists of breath, and deduced [FROM THE EVIDENCES] that babies are in fact a God-Given Life, even while still in the womb, since they BREATHE..

Look up, examine the posts for youself and you will come to the same conclusion if you are willing to examine them in a scientific manner

Therefore, any CHRISTIAN [or JEW, for that matter] who is to say a 'fetus' is not a baby, or that a baby is not alive whilst in it's mothers womb contradicts the Word of God in the Scriptures! =P

Okay, if it's medically proven, then you should be able to provide proof of that. So please show me a professional, reputable site that backs up that claim of yours that first-trimester fetuses breathe in utero.

 

[Zeena]

Okay, if it's medically proven, then you should be able to provide proof of that. So please show me a professional, reputable site that backs up that claim of yours that first-trimester fetuses breathe in utero.

Very scientific of you to chose to examine all sources, I must say!

The placenta provides the respiratory function for the fetus. Two major characteristics of placental circulation enable the placenta to maintain adequate oxygenation of the fetus. First, the placenta has a multivillous circulation that allows for maximum surface area for the exchange of oxygen and carbon dioxide between the mother and fetus. Second, several factors result in the lowering of maternal pH and increasing of fetal pH, which results in increased transfer of oxygen from the maternal to the fetal hemoglobin or RBCs.
Maternal blood, carrying oxygen on adult hemoglobin, releases oxygen to the fetal circulation and accepts both carbon dioxide and various byproducts of metabolism from the fetal circulation. These transfers result in a decrease in the maternal placental blood pH and a corresponding shift of the maternal oxygen-dissociation curve to the right, which results in a lower affinity of the hemoglobin for oxygen and the release of additional oxygen to the fetal hemoglobin. The corresponding shift in the fetal oxygen-dissociation curve to the left allows the fetal hemoglobin to bind more oxygen. Fetal "breathing," or chest wall and diaphragmatic movement, begins at approximately 11 weeks' gestation and increases in strength and frequency throughout gestation. Fetal ”breathing” is controlled by chemoreceptors located in the aorta and at the bifurcation of the common carotid. These areas sense both pH and partial pressure of carbon dioxide (pCO2). A reflex response to altered pH and pCO2 is present at approximately 18 weeks' gestation; however, the fetus is not able to regulate this response until approximately 24 weeks of gestation. Recent studies have indicated that this response cannot be elicited in utero even when the pH and pCO2 are altered, leading researchers to believe that this response is suppressed in utero and is not activated until birth. Studies also suggest that the low paO2 in utero may be the mechanism that inhibits continuous breathing, and when paO2 is increased, continuous breathing is stimulated (Nelson, 1994).

Source

DV plays a less important role in shunting well-oxygenated blood to the brain and myocardium in late normal pregnancy than in early gestation, which leads to increased fetal liver perfusion.

This vessel plays a critical role in the fetal circulation because it shunts highly oxygenated and nutrient-rich umbilical venous blood to the brain and myocardium instead of the fetal liver (32, 34). This role has been demonstrated by experiments on fetal primates (3), fetal sheep (6, 7, 33), and even in previable human fetuses (36). Edelstone et al. (7) showed that this shunting can account for 53% (±9%) of umbilical flow.

In animal models, the DV holds a prominent position in the fetal circulation because of its role in shunting highly oxygenated blood to the brain and the myocardium. A compensatory mechanism, supported by transient dilatation, is supposed to increase oxygenated blood flow through the DV during hypoxia or reduced umbilical flow (2, 4, 8, 9). To understand the adaptation to hypoxia in the human fetus, it is important to quantify the blood flow through this venous system and the repartition of umbilical flow through the DV.

The mild vasodilatation in the cerebral arteries observed in normal human fetuses during gestation (41) could be explained as a compensatory effect of the decreased flow and oxygenation through the DV to the brain. These data support the hypothesis that the DV shunt plays a relatively less important role in supplying well-oxygenated blood to the brain and myocardium in late gestation, probably reflecting the slower rate of growth of the brain compared with the liver in late gestation. In agreement with this observation, Rudolph et al. (37) demonstrated that experimental obstruction of DV in fetal sheep at term did not change oxygen delivery to the vital organs.

Source
ect, ect..

hypoxia is a form of asphyxiation btw.. If they didn't need breath, they couldn't be strangled..


As far as first tri-mester is concerned..

WEEK TWO
Implantation Occurs. By day seven, the embryo resembles a microscopic raspberry and implants into the lining of your uterus. As baby burrows into the blood-rich lining a few drops of bleeding or spotting may occur. This blooming ball of life, called a blastocyst – meaning, "sprout pouch," begins to organize into groups of several hundred cells. Some of these cells take root into the plush uterine lining; others arrange themselves in clusters and cavities, each with a different human destiny. The uterus, responding to the presence of the embryo, begins to form a primitive placenta, which transfers nutrients from mother's blood into the developing baby and facilitates disposal of the baby's waste products. As the placenta develops, it begins to produce human chorionic gonadotropin (HCG), a hormone that keeps the uterine lining in place and stimulates its growth by keeping the levels of estrogen and progesterone high. HCG is released into the mother's bloodstream at an increasing rate as the placenta develops. By the end of the second week, a pregnancy test will be able to detect HCB in the mother's urine.

WEEK THREE
Hormones Surge while baby and placenta grow. By week three, your menstrual period is late and you may suspect you are pregnant. Your rising hormone level is likely to cause you to begin feeling pregnant. Pregnancy hormones notify the ovaries not to ovulate again, and the ovaries, via hormonal messengers, notify the pituitary gland in the brain to no longer stimulate menstruation.
Within three weeks, what started out as a single cell has grown to millions of cells that now begin to differentiate into three types of cells: those that will become the nervous system, skin, and hair; those that will make up the gastrointestinal tract and those that will form the circulatory, genito-urinary and musculo-skeletal systems. By the end of the third week, a rudimentary heart tube begins to beat and circulate blood. You're just beginning to feel pregnant and already the baby making is well under way.

Source
And one of the ways oxygen is produced in BY the circulation of the blood, as noted above

There are MANY other articles from reputable sources, it's not hard to find if your intrested

Here's one of my searches -->
http://www.google.com/search?num=100&hl=en&lr=&rls=WZPA,WZPA:2006-36,WZPA:en&as_qdr=all&q=hypoxia+

And here's another
http://www.google.com/search?num=10...shunting+highly+oxygenated+blood+to+the+brain

ENJOY!

 

[HannahBanana]

Zeena, only in the first article that you quoted does it mention breathing, and there it is put inside quotation marks, which means that the term is being used metaphorically. So I still see no proof of the fetus literally breathing in utero.

But thank you for providing so many sources for me. That was very kind of you. (No sarcasm intended.)

 

[Zeena]

THIS is how a baby breathes in the uterus;via the umbilical cord.​

Or would you say that this man is not breathing either?
Hrrm? ​

I was rather rushed this morning, getting ready for work and all..

First off.. A REALLY kewl link!
http://www.createhealth.org/watchmegrow.html

Ok now..
These statements hit the mark more closely

Thorax
[FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif]Heartbeat can be detected with external instruments. Lungs develop further as the fetus inhales and exhales amniotic fluid, which is essential for air sacs within lungs to function properly. Source[/FONT]

By 11 to 12 weeks (3 months), he is breathing fluid steadily and continues so until birth. At birth, he will breathe air. He does not drown by breathing fluid with-in his mother, because he obtains his oxygen from his umbilical cord. This breathing develops the organs of respiration." "Life Before Birth," Life Magazine, Apr. 30, 1965, p. 13

That fluid is placenta, which does not actually supply the oxygen..

The umbilical cord supplies the oxygen, just like in the picture up top of the big space baby! haha!

Placental BLOOD, however, serves another purpose..

• Introduction

• Throughout the fetal stage of development, the maternal blood supplies the fetus with O2 and nutrients and carries away its wastes.
  • These substances diffuse between the maternal and fetal blood through the placental membrane.
  • They are carried to and from the fetal body by the umbilical blood vessels.
• Adaptations of fetal blood and vascular system.
• The concentration of hemoglobin in fetal blood is about 50 % greater than in maternal blood.
• Fetal hemoglobin is slightly different chemically and has a greater affinity for O2 than maternal hemoglobin.
  • At a particular oxygen partial pressure, fetal hemoglobin can carry 20-30% more O2 than maternal hemoglobin.

• Fetal Circulation OH-98

• In the fetal circulatory system, the umbilical vein transports blood rich in O2 and nutrients from the placenta to the fetal body.
  • The umbilical vein enters the body through the umbilical ring and travels along the anterior abdominal wall to the liver.
    • About 1/2 the blood it carries passes into the liver.
    • The other 1/2 of the blood enters a vessel called the ductus venosus which bypasses the liver.
  • The ductus venosus travels a short distance and joins the inferior vena cava.
    • There, the oxygenated blood from the placenta is mixed with the deoxygenated blood from the lower parts of the body.
    • This mixture continues through the vena cava to the right atrium.
  • In the adult heart, blood flows from the right atrium to the right ventricle then through the pulmonary arteries to the lungs.
    • In the fetus however, the lungs are nonfunctional and the blood largely bypasses them.
  • As the blood from the inferior vena cava enters the right atrium, a large proportion of it is shunted directly into the left atrium through an opening called the foramen ovale.
    • A small valve, septum primum is located on the left side of the atrial septum overlies the foramen ovale and helps prevent blood from moving in the reverse direction.
  • The rest of the fetal blood entering the right atrium, including a large proportion of the deoxygenated blood entering from the superior vena cava passes into the right ventricle and out through the pulmonary trunk.
    • Only a small volume of blood enters the pulmonary circuit, because the lungs are collapsed, and their blood vessels have a high resistance to flow.
      • Enough blood reaches the lung tissue to sustain them.
  • Most of the blood in the pulmonary trunk bypasses the lungs by entering a fetal vessel called the ductus arteriosus which connects the pulmonary trunk to the descending portion of the aortic arch.
    • As a result of this connection, the blood with a relatively low O2 concentration which is returning to the heart through the superior vena cava, bypasses the lungs.
    • At the same time, the blood is prevented from entering the portion of the aorta that provides branches leading to the brain.
  • The more highly oxygenated blood that enters the left atrium through the foramen ovale is mixed with a small amount of deoxygenated blood returning from the pulmonary veins.
    • This mixture moves into the left ventricle and is pumped into the aorta.
      • Some of it reaches the myocardium through the coronary arteries and some reaches the brain through the carotid arteries.
  • The blood carried by the descending aorta is partially oxygenated and partially deoxygenated.
    • Some of it is carries into the branches of the aorta that lead to various parts of the lower regions of the body.
    • The rest passes into the umbilical arteries, which branch from the internal iliac arteries and lead to the placenta.
      • There the blood is reoxygenated.

Source

"Maternal cigarette smoking during pregnancy decreases the frequency of fetal breathing by 20%. The ‘well documented’ higher incidence of prematurity, stillbirth, and slower development of reading skill may be related to this decrease." 80 F. Manning, "Meeting of Royal College of Physicians & Surgeons," Family Practice News, March 15, 1976

What the mother breathes is what the baby breathes :O

res·pi·ra·tion
-noun1.the act of respiring; inhalation and exhalation of air; breathing. 2.Biology. a.the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells, and the oxidation products, carbon dioxide and water, are given off.

Dictionary.com

 

[HannahBanana]

Zeena, I understand that the fetus can breathe in utero starting during the late second trimester. It's just your claim that they can breathe in utero during the first trimester that you have not been able to prove at all yet with professional evidence. Does that not tell you something about the veracity of that claim?

 

[Annoula]

Okay, if it's medically proven, then you should be able to provide proof of that. So please show me a professional, reputable site that backs up that claim of yours that first-trimester fetuses breathe in utero.

i can't provide any scientific evidence on anything and i am not sure what everybody is talking about in here, but i would like to say that the fetus and the embryo "breathes" through the mother.
babies that are born in water and they don't have their cord cut, can swim in the water-pool without getting drawn.

i don't see any difference between a 1st semester baby and an older semester baby...

if that matters to anyone...

 

[HannahBanana]

i can't provide any scientific evidence on anything and i am not sure what everybody is talking about in here, but i would like to say that the fetus and the embryo "breathes" through the mother.
babies that are born in water and they don't have their cord cut, can swim in the water-pool without getting drawn.

i don't see any difference between a 1st semester baby and an older semester baby...

if that matters to anyone...

No, it does not breathe. It respirates, sure. But it does not breathe.

Also, how can you not see a difference between this and this? The second image clearly shows a much more developed fetus, and if you cannot recognize that then I don't know what to tell you. It's quite clear, both physically and biologically (if you know a thing about the biological development of the fetus, that is).

 

[Zeena]

No, it does not breathe. It respirates, sure. But it does not breathe.

Also, how can you not see a difference between this and this? The second image clearly shows a much more developed fetus, and if you cannot recognize that then I don't know what to tell you. It's quite clear, both physically and biologically (if you know a thing about the biological development of the fetus, that is).

From WikiPedia.com

Overview

Both mother and fetus share a common blood supply. In particular, the fetus's blood supply is delivered via the umbilical vein from the placenta, which is anchored to the wall of the mother's uterus. As blood courses through the mother, oxygen is delivered to capillary beds for gas exchange, and by the time blood reaches the capillaries of the placenta, its oxygen saturation has decreased considerably. In order to recover enough oxygen to sustain itself, the fetus must be able to bind oxygen with a greater affinity than the mother.
Fetal hemoglobin's affinity for oxygen is substantially greater than that of adult hemoglobin. Notably, the P50 value for fetal hemoglobin (i.e., the partial pressure of oxygen at which the protein is 50% saturated; lower values indicate greater affinity) is roughly 19 mmHg, whereas adult hemoglobin has a value of approximately 26.8 mmHg. As a result, the so-called "oxygen saturation curve", which plots percent saturation vs. pO2, is left-shifted for fetal hemoglobin in comparison to the same curve in adult hemoglobin.
This greater affininty for oxygen is explained by fetal hemoglobin's interaction with 2,3-bisphosphoglycerate (2,3-BPG). In adult red blood cells, this substance decreases the affinity of hemoglobin for oxygen. It is also present in fetal red blood cells, but does not interact with fetal hemoglobin, leaving its affinity for oxygen unchanged. Adult hemoglobin alone actually has a higher affinity for oxygen than its fetal equivalent, but the levels of 2,3-BPG reduce it.

Distribution
After the first 10 to 12 weeks of development, the fetus' primary form of hemoglobin switches from embryonic hemoglobin to fetal hemoglobin. At birth, fetal hemoglobin comprises 50-95% of the child's hemoglobin. These levels decline after six months as adult hemoglobin synthesis is activated while fetal hemoglobin synthesis is deactivated. Soon after, adult hemoglobin (hemoglobin A in particular) takes over as the predominant form of hemoglobin in normal children.

Source

 

[Zeena]

i am not sure what everybody is talking about in here

There were Christians who were advocating abortion.. I showed them how babies breath in the womb, as well as PLENTY of Scripture which assertains that 'our life is a breath'. which is a CLEAR indication that babies are sanctioned by God

 

[HannahBanana]

Zeena, you still have not shown any evidence that a first-trimester fetus can take in oxygen through its nose and/or mouth while in utero. That is the definition of breathing, not just taking in oxygen through the bloodstream.

 

[kopilo]

once again people sidestep the main issue which could end the argument on abortion and that is removing unwanted pregnancies.
No unwanted/harmful pernancies, no cause for abortion.

 

[KomissarSteve]

once again people sidestep the main issue which could end the argument on abortion and that is removing unwanted pregnancies.
No unwanted/harmful pernancies, no cause for abortion.

And how do you propose we stem those?

 

[MooCar93]

And how do you propose we stem those?

No doubt he'll say either abstinence or better birth control education. Unfortunately, birth control is not 100% effective in any form, and most people don't seem to be too fond of abstinence.

 

[KomissarSteve]

Right, but if anything is at least going to put a dent in unwanted pregnancies, it's going to be a combination of better sex-ed, and easier access to birth control.

I remember back when I was in middle school and high school, (both Christian schools - one Lutheran, the other Catholic) one common line we were fed was that condoms are only "2/3 effective," or less. I soon learned how much this was hogwash, but if kids are still being taught this nonsense, it's no wonder that there are so many unwanted pregnancies.

 

[EnemyPartyII]

Right, but if anything is at least going to put a dent in unwanted pregnancies, it's going to be a combination of better sex-ed, and easier access to birth control.

I remember back when I was in middle school and high school, (both Christian schools - one Lutheran, the other Catholic) one common line we were fed was that condoms are only "2/3 effective," or less. I soon learned how much this was hogwash, but if kids are still being taught this nonsense, it's no wonder that there are so many unwanted pregnancies.

Not to mention all the scare mongering that goes on about the likelihood of STD spread outside of marriage... some of what passes for sex ed these days is better termed child abuse. It certainly leaves long term mental scaring

 

[Annoula]

No, it does not breathe. It respirates, sure. But it does not breathe.

Also, how can you not see a difference between this and this? The second image clearly shows a much more developed fetus, and if you cannot recognize that then I don't know what to tell you. It's quite clear, both physically and biologically (if you know a thing about the biological development of the fetus, that is).

i saw the links and i understand what you mean.
but we probably see the things from different angles.

you see a fetus in the second picture and something not created yet (something with no human form as we know it) in the first one, am i close to what you think??

i see it a bit differently. for me it's like you show me a picture of yourself when you were 10 years old and when you are 30 years old.
i could not deprive you from your ife just because you were 10 years of age.

i am not trying to impose my opinion to you.
just to show you how i think.

 

[Zeena]

Zeena, I understand that the fetus can breathe in utero starting during the late second trimester. It's just your claim that they can breathe in utero during the first trimester that you have not been able to prove at all yet with professional evidence. Does that not tell you something about the veracity of that claim?

AHA! I finally found some relevant data

NOW for the good stuff!

Nonmitochondrial oxygen utilization by rabbit blastocysts and surface production of superoxide radicals

C Manes and NC Lai


A minimum value for nonmitochondrial oxygen utilization in rabbit blastocysts at day 6 post coitum was determined by measuring oxygen consumption in the presence of cyanide. A microcathode oxygen electrode was used to monitor oxygen concentration continuously during blastocyst incubation in a newly devised culture medium, and the uninhibited blastocyst was found to consume 2.79 +/- 0.09 microliters O2 h-1 cm-2. This rate was reduced by 51% in the presence of 1 mmol KCN l-1. The addition of nitroblue tetrazolium to the cyanide-containing medium reduced net oxygen consumption by an additional 23% as the nitroblue tetrazolium was reduced to formazan. The ability of rabbit blastocysts to reduce nitroblue tetrazolium in the presence of cyanide was investigated using a spectrophotometric assay. Fractionation of blastocyst cells revealed that the enzymatic activity chiefly responsible for formazan production partitioned with the membrane/particulate fraction and could be solubilized by the detergent NP40. The enzyme was NAD(P)H-dependent, did not require divalent cations for activity, and appeared to contain no haeme moiety. The rate of formazan production in the spectrophotometric assay was markedly reduced by the presence of superoxide dismutase. The oxygen electrode and spectrophotometer data indicate that there is a superoxide-generating NAD(P)H oxidase on the blastocyst surface. Calculations based on the average surface area of rabbit blastocysts at day 6 show that these embryos can produce at least 8 nmoles of superoxide per embryo h-1. Potential deciduogenic effects of blastocyst-derived superoxide and its dismutated product, hydrogen peroxide, are discussed.
Source

Oxygen uptake and carbohydrate metabolism by in vitro derived bovine embryos

JG Thompson, RJ Partridge, FD Houghton, CI Cox, and HJ Leese


The consumption of oxygen, uptake of pyruvate and glucose and production of lactate were determined for groups of bovine embryos produced in vitro from the one-cell to the blastocyst stage (day 0-6 of culture). Measurements were made in Hepes-buffered synthetic oviduct fluid medium supplemented with 1.0 mmol pyruvate l-1, 10 mmol D,L-lactate l-1 and 1.5 mmol glucose l-1 and also 3 mg BSA ml-1 and, from day 5 of development, 10% (v/v) fetal calf serum. The amount of ATP production was determined from oxygen consumption and the proportion of glucose taken up that could be accounted for by lactate production. The data revealed that oxygen consumption was relatively constant from days 0-4 of culture (0.24-0.27 nl per embryo h-1), but increased with the initiation of compaction (0.39 nl per embryo h-1) and continued to increase with the formation and expansion of the blastocoel (0.9 nl per embryo h-1). Both pyruvate and glucose uptake followed similar patterns. Furthermore, when plotted against oxygen consumption, both pyruvate and glucose uptake increased significantly (P < 0.001) in a linear relationship (R2 = 0.61 and 0.49, respectively). Lactate production also increased with development and accounted for 40% of glucose uptake at day 0 of culture (putative zygotes), increasing to 70% by day 2 (eight-cell stage) and 100% of glucose uptake from day 4 of culture onwards. ATP production followed a similar pattern to that of oxygen consumption (60-85 pmol per embryo h-1 from day 0 to day 4) increasing with compaction (124 pmol per embryo h-1) and blastulation (221 pmol per embryo h-1). For precompaction stages, 93-96% of ATP production was derived from oxidative phosphorylation, decreasing to 82% with compaction. ATP produced by oxidative phosphorylation could be accounted for by the uptake of pyruvate, suggesting that bovine embryos produced in vitro utilize little endogenous substrates when appropriate exogenous substrates are present in the culture medium. The data revealed that bovine embryos were dependent on oxidative phosphorylation for energy (ATP) production at all stages of pre-elongation development, with perhaps a shift in dependence towards glycolysis in conjunction with compaction. It follows that oxidizable substrates, such as pyruvate and certain amino acids, are preferred in embryo culture medium during development in vitro.
Source

And, the pice da resistance!!!!

Reactive oxygen species and sperm physiology

E de Lamirande, H Jiang, A Zini, H Kodama, and C Gagnon

Although high concentrations of reactive oxygen species (ROS) cause sperm pathology (ATP depletion leading to insufficient axonemal phosphorylation, lipid peroxidation and loss of motility and viability), recent evidence demonstrates that low and controlled concentrations of these ROS play an important role in sperm physiology. Reactive oxygen species, such as the superoxide anion, hydrogen peroxide and nitric oxide, induce sperm hyperactivation, capacitation or the acrosome reaction in vitro. The ROS involved in these processes may vary depending on experimental conditions, but all the evidence converges to describe these events as 'oxidative' or 'redox regulated'. Human sperm capacitation and acrosome reaction are associated with extracellular production of a superoxide anion that is thought to originate from a membrane 'oxidase'. The enzymes responsible for tyrosine phosphorylation-dephosphorylation of sperm proteins are possible targets for ROS since mild oxidative conditions cause increases in protein tyrosine phosphorylation and acrosome reaction. The lipid peroxidation resulting from low concentrations of ROS promotes binding to the zona pellucida and may trigger the release of unesterified fatty acids from the sperm plasma membrane. The fine balance between ROS production and scavenging, as well as the right timing and site for ROS production are of paramount importance for acquisition of fertilizing ability.
Source

There is the breath of life AT conception

That site was a JEWEL!

Praise God!

 

[Zeena]

i saw the links and i understand what you mean.
but we probably see the things from different angles.

you see a fetus in the second picture and something not created yet (something with no human form as we know it) in the first one, am i close to what you think??

i see it a bit differently. for me it's like you show me a picture of yourself when you were 10 years old and when you are 30 years old.
i could not deprive you from your ife just because you were 10 years of age.

i am not trying to impose my opinion to you.
just to show you how i think.

Agreed!

We are who we are..

Just like God said, I AM, THAT I AM!

No process of development or growth is gonna change THAT fact!