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Elsy

Physiology

QuestionAnswer
What are osteoblasts? Bone forming cells that secrete osteoid and promote mineralization
What is the function of osteoclasts? break down bone matrix (resorption) to release calcium into the blood
Why is calcium important in bone physiology? provides hardness to bones , essential for muscle contraction, nerve function, and blood clotting
What is the epiphyseal plate? growth plate made of cartilage where bone elongation occurs during development.
How does mechanical stress affect bones? Stimulates bone remodeling and increases bone density
What hormones regulate bone metabolism? Parathyroid hormone (PTH), calcitonin, and vitamin D
What does PTH do to bone? Stimulates osteoclast activity, increasing blood calcium levels
How does vitamin D affect bone physiology? It enhances calcium and phosphate absorption
What is bone remodeling? continuous process of bone resorption and formation to maintain bone strength and calcium balance.
What are the two main phases of bone remodeling? 1. Resorption – osteoclasts break down bone matrix 2.Formation – osteoblasts build new bone
Created by: elsymaer0162
 

 



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