TERMS March 22, 2021 Habitual Bipedalism When Did it Evolve? Why are we bipedal? 1.Historical explanations a. Tool use b. Climbing c. Weapons d. Display e. Aquatic habitat f. Food carrying g. Seed eating h. Demographic model i. Energetics j. Scavenger Hypothesis k. Thermoregulation Read Langdon, pages: 121-126 Comparison of Chimp and Human Os Coccyx Where does Australopithecus fit? Did Australopithecus have a Bipedal Striding Gait? Lumbosacral Plexus - L1 - S3 Femoral nerve Obturator nerve Gluteal nerves Sciatic nerve Femoral Triangle Comparative anatomy of Hip Musculature