ANT 102 Quiz: Exam 1 Study Guide
Document Summary
A small, triangular bone at the base of the spinal column in humans and some apes, formed of fused vestigial vertebrae. Hominoidea apes lack a coccyx (external tail). Adaptation to bipedalists to let them stand with their feet together. Femurs with a bicondylar angle indicates the individual walked bipedally. Arches in the foot, formed by the tarsal and metatarsal bones and strengthened by ligaments and tendons. Allow the foot to support the weight of the body in the erect posture. Humans have 2 arches in their feet, apes do not. One suggestion as to why humans have smaller brains than apes. Creates a distinct curvature in the lower spine. Why humans have so many lower back problems. Apes don"t have any lumbar curvature at all. Composed of 5 vertebrae supporting the lower back. Apes are c shaped, humans are s shaped. Famous for hominin footprints preserved in volcanic ash made by 3 individuals.
