3 gender differences in skeletons??

Question

give a brief reason for each.

(basicly girls have to have a different set up for the wait and hips to give birth...) can you explain this ...

Answer 1

Pelvis - Birth canal

Ribs - Configured differently, could be for pregnancy

Back - weight shift during pregnancy.

Answer 2

The true pelvis of a woman has to be more "rounded" so to speak, to accomodate the presentation of a neonate.  When there is cephalo-pelvic disprotporation, the delivery can be in jeopardy, so if the obstetrition is aware of this before hand (via ultrasound), then arrangements can be made for a medically necessary C-section.  A woman's pelvis can be anatomically designated as gynecoid in addition to several other terms which describe the pelvic outlet in a female.

Answer 3

There are many differences between the male and female human skeletons. Men tend to have slightly thicker and longer limbs and digit bones while women tend to have larger pelvic bones in relation to body size. Women also tend to have narrower rib cages, smaller teeth, less angular mandibles, and less pronounced cranial features such as the brow ridges and occipital protuberance (the small bump in the cranium's posterior). Most striking is the difference in hip bones, owing to differences related to the process of reproduction, and very likely also to the biological process ...

Answer 4

Girls

Boys

Other species

Answer 5

after puberty a womans hips broaden, to support the weight of a baby, the hips also tilted forward , for childbearing, and the since the pelvis is also broader it permits a larger pelvic opening for the birth canal.

Answer 6

women have smaller overall skeleton, wider hips, and shorter back. One thing that I always found interesting is that due to de morphology of women, if you have one stand straight in front of a wall and lean forward grab a chair and lean back lifting the chair, she will be able to do it ...where a man can't and will fall forward.

Answer 7

Ok, so as already mentioned the pelvis is the single best indicator of the s*x of an individual (use the term s*x, not gender).  A broad sciatic notch, presence of a ventral arc, broad sub-pubic angle and broad pubic body are all indicators of a female, while the opposite are male characteristics.    

The skull is the next best indicator of s*x.  Male skulls tend to be more robust; they have a robust nuchal crest, supraorbital ridges, large mastoids and a square jaw.  Females have a small nuchal crest, almost no supraorbital ridges, small mastoids and a U-shaped jaw.

Now the third indicator is a little bit harder, as those first two are definitely the best.  Contrary to what has already been said by other people, ribs are NOT good indicators of s*x.  Sure a female rib cage will be smaller overall than a males, but only a male from the same race.  From experience, if you compare say a white american woman's rib cage to that of a man from India, sometimes they will be the same size.  If you compare the size of the ribcage, you must be careful to keep things relative.  As it is, there is no reliable method to determine s*x just from looking at ribs.  

The other methods I've used are measurements of the humeral and femoral head.  A method exists where you measure those and compare to measurements of known ranges from females and males to see where the measurement falls under.  I've found this method to be fairly accurate, definitely much better than looking at ribs, which I find way too subjective.

Answer 8

A mans pelvis is fused all the way round, a womans is not fused at the front allowing it to flex during child birth.

I dont know of any other differences, but if you do I would be interested to know what they are

Answer 9

One would be that girls have a slightly more widened pelvis. A man's is more narrow

Answer 10

not sure

Answer 11

no