Sex differences in human physiology pelvis is, in general, different between the human female and male skeleton. It differs both in overall shape and structure. The female pelvis, adapted for gestation and childbirth, is less high, but proportionately wider and more circular than in the male; its sacrum—the triangular bone at the upper posterior of the pelvic cavity, serving as base of the spine—is also wider. The female pelvis is tilted anteriorly, often resulting in the more sway-backed appearance. In the female, the acetabula, the concave surfaces to which the balls of the femurs attach via ligaments, are located farther apart, which increases the distance
Sacrum bone of Tequixquiac Sacrum bone of Tequixquiac The Sacrum bone of Tequixquiac is an ancient paleo-Indian sculpture carved in a pleistocene-era bone of a prehistoric camel. It was found by Mexican naturalist Mariano Bárcena in 1870. It is considered among the earliest pieces of art from the American continent. A sacrum bone found in Tequixquiac is considered a work of prehistoric art. These people were nomadic, hunting large animals such as mammoths and gathering fruits as evidenced by archaeological evidence found at the site. One of the most salient discoveries of primitive art in America was found here, called the Sacrum bone of