I'm looking at what you said in post 148. If I misrepresented your position, it was not intentional. What is your position regarding this subject?
Direct comparison, minor differences between a newborn and a 10 year old compared with major differences between a fetus and a new born. So I do agree there are some minor differences, but no where near the same as between a fetus and a newborn.
You believe there are more biological differences between a fetus---7, 8 or 9 months gestation and a newborn then between a newborn and a 10 year old?
Yep, not just believe it either .. medical facts. or don't you believe any of the following are major differences LUNGS AND CIRCULATORY SYSTEM While the fetus is in the womb, it "breathes" by exchanging oxygen and carbon dioxide through the mother's circulation via the placenta. Most of the blood does not go through the developing baby's lungs. Instead, it travels through the heart and flows throughout the baby's body. At birth, the baby's lungs are filled with amniotic fluid and are not inflated. The baby takes the first breath within about 10 seconds after delivery. It sounds like a gasp, as the newborn's central nervous system reacts to the sudden change in temperature and environment. Once the umbilical cord is cut and the baby takes the first breath, a number of changes occur in the infant's lungs and circulatory system: Increased oxygen in the lungs causes a decrease in blood flow resistance to the lungs. Blood flow resistance of the baby's blood vessels also increases. Amniotic fluid drains or is absorbed from the respiratory system. The lungs inflate and begin working on their own, moving oxygen into the bloodstream and removing carbon dioxide by breathing out (exhalation). With birth, a change from parallel flow through the heart to a serial one gradually takes place. The following changes must occur: The gas exchange takes place in the baby's lungs. By cutting the umbilical cord, the placental circulation system is switched off. The fetal heart shunts become closed. With the activation of breathing the lungs becomes distended, the capillary network dilated and their resistance is reduced drastically so that a rich flow of blood can take place. As a consequence, the pressure in the right atrium sinks in comparison with that of the left one. This pressure turnaround in the atria causes the septum primum to be pressed against the septum secundum and the foramen secundum becomes functionally closed. Towards the end of the first year, it has also grown together in 99% of the babies --> The shunt between the left and right atrium is closed. On the other hand, with the cutting of the umbilical cord following birth, the placental low resistance area also disappears and the peripheral resistance increases in the systemic circulation. The pressure in the aorta is now higher than that in the truncus pulmonalis and the right-left shunt via the ductus arteriosus that is present before birth is turned around into being a left-right shunt. The pO2 pressure in the aorta increases since the blood is now oxygenated directly in the baby's lungs. This increase in pO2 triggers a contraction of the smooth musculature in the wall of the ductus arteriosus and thereby to a functional seal.
That is interesting frankly. Everything is in place---but triggers occur. It reminds me of adolescence in a way.
Because, in the womb for the majority of gestation, they aren't technically alive. These babies were thinking, feeling, using their own blood system, and breathing. Now, how about you not be a total jerk and stop using dead babies to further your own goals.
Why....these are biological changes that have to do with development. Everything is in place...for the right trigger to set off a domino effect.