Health Sciences 2300A/B Lecture Notes - Lecture 2: Vertebra, Intervertebral Foramina, Intervertebral Disc
14 Dec 2016
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Document Summary
Protects a key component of the nervous system spinal cord. Artery that runs through the foramen (vertebral) of willis, it can be distributed anywhere in the brain. Then blood goes to the brain, as long as blood gets to the circle: facets on articulate process. Facet on articulate process always faces posteriorly: facet on inferior articulate process. Lumbar = 5: concave posteriorly, lumbar region, small of the back, weight bearing region of the vertebral column. Sacral region: 1 when fused together, convex posteriorly with the coccyx, 2-4 fused bones together but refer to it as 1 bone. = 26 bones in total adult vertebrae/vertebral column. As one grows = change in the shape. Thoracic and sacral: existing when the child is born (with that curvature) Cervical (when the child can hold it"s head up: developed when one grows. Lumbar (not developed until the child begins walking, muscles strengthen)
