Rib Cage Development & Testosterone
In males, expansion of the ribcage is caused by the effects of testosterone during puberty. Thus, males generally have broad shoulders and expanded chests, allowing them to inhale more air to supply their muscles with oxygen.
Read more about this topic: Human Rib Cage
Famous quotes containing the words rib, cage and/or development:
“Though shoulder, bosom, lip, and knee
Are praised in every kind of art,
Here is love’s true anatomy:
His rib is gone; he’ll have her heart.”
—John Hollander (b. 1929)
““... Let the cage bird and the cage bird mate and the wild bird mate in the wild.””
—William Butler Yeats (1865–1939)
“America is a country that seems forever to be toddler or teenager, at those two stages of human development characterized by conflict between autonomy and security.”
—Anna Quindlen (b. 1952)