Health Sciences 2300A/B Lecture Notes - Lecture 4: Bone Marrow, Bone, Osteon

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2300A/B
• Professor: Jamie Melling

Document Summary

Female: rapid reduction after 50 years old, at post menopausal years. Protective covering for certain organs and region of the body. Provide a framework and shape that supports the body. Bones allow us to move, it"s really muscles contracting. And all the structures it"s linked up to. Prevents trauma to the brain: most notable is the brain (hemopoietic tissue, only flat bones contain red bone marrow. Certain bones contain red bone marrow which produces new red blood cells. In center of bones we have red bone marrow, where rbc"s are produced. Bone acts as a storage medium and (cid:498)buffer(cid:499) for calcium in the blood. A lot of other bones contain yellow bone marrow which is fat (homeostasis) If you take ca2+ out, bones become rubbery. If blood is too acidic, the red blood cells have a very difficult time carrying oxygen.