ANTH 0680 Lecture Notes - Lecture 9: Loose Connective Tissue, Callitrichidae, Temporal Bone
Document Summary
Opposable thumb- can be brought to touch the rest of the fingers on the rest of the hand. Opposable big toe- foot is like a hand. Some taxonomists divide primates into 2 (bimana) and 4 (quadrumanus) handed. Allows an animal to be able to grasps and balance on very small, weak branches because it can disperse its weight amount 4 hands grasping 4 branches. Many primates are arbored- living in the trees: flattened nail. No other living animals have flattened nails. Backside of the claw is open (imagine dog claws) Most primates have a flattened nail on the big toe- similar to us, yet we have nails on every digit: having stereoscopic (3-d vision) Eyes face forward, not to the sides- frontated. Eyeball sits in a bone structure known as the orbit. Cats also have stereoscopic vision: postorbital bar. A bone strut that boarders the lateral side of the eyeball. Contribution from the frontal bone and the zygomatic bone.
