Health Sciences 2300A/B Study Guide - Midterm Guide: Aorta, Xiphoid Process, Radial Tuberosity
1 Mar 2017
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Document Summary
Bone density changes over life in men vs women. Slow downhill starts at age 35 for both genders. Women start a steep downhill at age 50-70. Factors that can decrease bone density in women. Post-menopause intervention can slow the decrease of bone density. Protective covering for organs and other stuff. Storage medium and buffer for calcium in the blood, helps maintain homeostasis in the blood. Contains bone marrow (red in flat ones -> hemopoietic tissue, yellow in longer bones -> made of fat) Compact towards periphery and spongy towards the middle. Cylinder made up of ringed layers with blood vessels in the central canal (each osteon has its own blood supply) Layer of collagen fibers is oriented perpendicular to the previous layer. Strengthens osteons by not allowing cracks to propogate across bones. Not shoulder or clavicle - pectoral girdle, appendicular skeleton. How the bones of the skull are joined together, type of joints.
