ANAT 101 Lecture Notes - Lecture 16: Axial Skeleton, Clavicle, Hip Bone

• School: Drexel University
• Department: Anatomy
• Course: ANAT 101
• Professor: Rompolski Krista

Document Summary

Known as the spinal column, backbone and spine. Protects the spinal cord and supports head, neck, and trunk. Spine is curved to transfer weight of body. Sacrum and coccyx and formerly fused vertebrae (were separate but then fuse into one bone) We start out as a c shaped. When we get older, we retain that shape. When we walk/crawl, we develop the secondary curves. Secondary-1cervical (lift up head), 3lumbar (to walk upright) Spinal cord lies in body of vertebrae. Between sections, spinal nerves branch out between transverse processes (extension outwards of vertebrae) Between all of the sections are the discs and they are big pads of ibrocartilage because it"s the toughest and helps resists shearing forces. Located between the bodies of the vertebrae from the second cervical to the sacrum. Each has an outer ring of ibrocartilage (annulus ibrous) which surrounds soft, pulpy nucleus (nucleus pulposus-luid gel like material that helps absorb shock)