Chapter 6 Flashcards
(6 cards)
Skeletal system functions
Support
Protection
Assistance in movement
Mineral homeostasis
Blood cell production
Triglyceride storage
Bone resorption
The removal of minerals and collagen fibers by osteoclasts
Bone deposition
The addition of minerals and collagen fibers by osteoblasts
Calcium homeostasis
Function of nerve and muscle cells
Required for blood clotting
Required as a cofactor for many enzymes
Parathyroid hormone
Increases blood calcium levels
Stimulates kidneys to reabsorb Ca2+
Stimulates formation of calcitrol - promotes the absorption of calcium from GI tract
Calcitonin
Decreases blood calcium levels
Released from para follicular cells in the thyroid
Increases activity of osteoblasts
Increase of movement of calcium into bones