2007-01-10 05:50:48 · 20 answers · asked by basebam1967 1 in Science & Mathematics ➔ Biology
Nipples, like toes get cold much easier than core parts of the body. Because these are "non-essential" extremities the body reduces the amount of warm blood that goes to these parts of the body when the external temperature is cold. This warm blood is diverted to important organs like the heart and lungs. Because the loss of this warm blood leaves nipples open to freezing they constrict to prevent further heat loss.
2007-01-10 05:56:31 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A baby can't suck anything out of a nipple that is hard and tightened from the cold. Once this is understood the baby will not be brought out in an environment that will make it sick.
2016-05-23 05:05:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Not sure......but I suspect knowing the bodies ability for miricles.....its as simple as a way in which the body protects that part of the body from temperatures that are not normal for that area..........but you have to admit another interesting side affect is the way it turns guy's on :-)............hmmmm and when that action takes place lets face it the body warms up :-)
2007-01-10 05:55:39 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It decreases surface area so heat loss is lessened. The hardening is caused by capillaries contracting, the same thing that causes goose bumps.
2007-01-10 05:54:39 · answer #4 · answered by Kejoxen 2 · 0⤊ 0⤋
Every purpose in the universe!
2007-01-10 05:53:44 · answer #5 · answered by Anonymous · 0⤊ 1⤋
im guessing the grow a thick layer to keep body temperature warm... or it may be that the sensors.... just react to the weather and do the reverse in order to keep the body warm
2007-01-10 05:55:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
no purpose just fun to look at. It happens just like goose bumps on your arms
2007-01-10 06:00:29 · answer #7 · answered by Larry m 6 · 0⤊ 0⤋
Purpose? It is merely a reaction with no purpose and if you really must question this then you must be Asexual.
2007-01-10 05:55:37 · answer #8 · answered by Dr. Zhivago 2 · 0⤊ 1⤋
I sure would like to know that and also why does a man's penis shrink when it's cold?
2007-01-10 05:55:15 · answer #9 · answered by to_sassy4_u 5 · 0⤊ 0⤋
It is a body process. It is a reaction to the cold.
2007-01-10 05:53:47 · answer #10 · answered by Shayna 6 · 0⤊ 1⤋