CAS AN 102 Lecture Notes - Sacroiliac Joint, Hip, Femur Neck

• School: Boston University
• Department: Anthropology
• Course: CAS AN 102
• Professor: Matt Cartmill

Document Summary

Anamensis and afarensis are parent and daughter species. Aethiopicus and boisei are parent and daughter species. Pelvis: significantly shorter illium (upper part of pelvis) but much wider and further back. Keeping the center of gravity directly above, or a little behind, the center of the hip. Increasing area for glutei muscles to connect to. Bigger hip joint (allow the body to carry the extra load above the hips) Lumbar enlargement and lordosis (bringing the upper part of the body over the hip joints) Short and wide sacrum to allow enough space for birth. Spends an incredible amount of time standing on one foot. Actually a better, ore efficient walker than humans. With the wider hip fan and a longer femoral neck, there is more leverage for the gluteal muscles , meaning they don"t have to work as hard against the downward force of the body weight (lovejoy)