I understand your question and I actually asked the same question years ago in a human anatomy class. When I asked it, I asked, "Considering evolution, if people never wore clothes, would they still have that line dividing their stomach and pubis, or would it all just flow together? Basically, would a fat man still have a gut that hangs or would it all just meld into his pubic region."
If I understand correctly, you're asking the same question, but putting it in the context of pregnancy (instead of a "fat man"- LOL).
The answer I got was that the is more connective tissue at the wasit line. The theory in evolution is that this excess of connective tissue is due to a few different things.
First, there's more connective tissue there in order to make intercourse easier for the species. Simply, in an overweight person or a pregnant person, this connective tissue holds up the fat (or the baby) so that it doesn't interefere (or get injured in the case of a baby) during sexual intercourse.
Second, there's a theory that states that this line of connective tissue is there as an evolutionary throwback. Basically, it claims that the body created this line in order to keep body mass higher in the body so that man could be more intimidating to predators. I don't really buy into this one.
Third, there's a theory similar to the second one that states that the body developed this line to keep more mass higher in the body to help with the center of gravity considering how man acted and moved during evolution. A spin-off of this theory states that this line was created in an evolutionary attempt to help man move more quickly and freely (by not allowing fat to build up in the pubis and hinder walking/running - and by the same token, not allowing a pregnant belly to hang so low that walking would cause the thighs to hit the fetus in the womb).
Fourth, and I think I put most of my faith in this one, is a theory stating that it's an evolutionary adaptation. As people wore clothes, the body adapted to pants, skirts, girdles, dresses, belts, etc. Over the thousands of years that man has been wearing clothes, this line of connective tissue formed as an adaptation to clothes. And, you can even mix this theory with some of the others and think that the human body adapted this line as a way to protect pregnant womens' unborn fetuses by allowing the belly to sit above the low point of the torso, facilitate easier sexual intercourse, or anything else.
Overall, it depends on what you believe, but those are some of the theories I heard when I asked the question years ago.
In any case, that line should not fill out later because it's filled with a larger amount of connective tissue.
2006-12-03 19:47:48
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answer #1
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answered by Myzyri 2
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