KIN 2500 Chapter : KIN INTERSESSION 2500 CHAPTER 6 NOTES
15 Mar 2019
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Document Summary
Functions of bones and the skeletal system: support, protection, assistance in movement, mineral storage and release, blood cell production, triglyceride storage, hemopoesis production of blood cells that occurs in red bone marrow. Histology of a spongy bone: osteoclasts lined along osteoblasts to form trabeculae, red bone marrow, ends of long bones, inside flat bones, bones of the skull, ribs. Blood and nerve supply of bone: periosteal arteries, nutrient arteries, nutrient foramen, metaphyseal and epiphyseal arteries. Draining blood from bone: nutrient veins, metaphyseal/epiphyseal veins, periosteal veins. Intramembranous ossification: simpler process than endochondral ossification, examples: flat bones of the skull, involves a 4-step process. Endochondral ossification: cartilage is replaced by bone, examples: most bones of the body, involves a 6-step process. Remodeling of bone: bone remodeling, bone resorption, bone deposition. Clinical connections: osteoporosis literally means porous bones , the problem is that bone resorption (destruction) outpaces bone deposition (formation, paget"s disease.
