It is difficult to determine the sex of a young child’s skullbecause both male and female young adult skulls appearfemale-like. What factors cause those features to change inmales by adulthood?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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It is difficult to determine the sex of a young child’s skull
because both male and female young adult skulls appear
female-like. What factors cause those features to change in
males by adulthood?

Expert Solution
Step 1


Mainly male skulls are heavier, the bone is thicker and the regions of muscle attachment are more defined than in females.  The impression of the forehead, eyes and jaw, between men and women, are utilized to specify the sex of a skull. 
When infants are born their skulls are soft, which assists them to pass through the birth canal. It can take 9-18 months before a baby's skull is fully constructed. Bones in the skull shrink, sink and slide around, as we age.

Step 2

As the year's pass, facial bones forfeit volume, providing to the impression of ageing. The bones of the aged female show that her eye socket is bigger, the angle of her lower jaw bone has declined and the angle of her brow is lessened.
The configuration of our face alterations as we age.  As these bones lose thickness, they decrease affecting loss of backing to the more visible configurations of your face. This builds larger eye sockets, limited prediction and fullness in the cheeks, a shorter, thinner jaw, and a smaller chin
The skull thickness rises from newborn to 3 Y, but it is non-uniformly allocated across the skull. In particular, the skull thickness importance in the occipital area is much higher than those in the frontal and parietal regions.

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