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SCN1111 Musculoskeletal Exam Questions And 100% Correct Answers
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SCN1111 Musculoskeletal Exam Questions And 100%Correct Answers
Identify the different cells of bone tissue Ans Osteoblasts, osteoclasts, osteocytes and
bone matrix
What is the function of osteoblasts Ans a cell that makes bone. Produce collagen and
proteoglycans (these make up the bone matrix), stimulate osteoclast resorptive activity.
Active on the outer surfaces of bones.
What is the role of osteoclasts - Anwer bone resorbing cells. Reabsorb bone; help with
mineral homeostasis. Move over bones surfaces to areas that have been prepared and
stripped osteoid.
What is the role of osteocytes - Answer an mature osteoblast. Maintain the bone matrix
by helping with bone calcification.
What is the function of the bone matrix - Answer comprised of the extracellular
components of bone tissue in the form of collagen fibres, proteins, carbohydrate-protein
complexes, ground substance and minerals
What are the two types of bone - Answer compact and spongy
Describe compact bone - Answer (85%); highly organized, solid and very strong.
Structural unit of compact bone is the haversian system (also called an osteon)
Describe spongy bone - Answer (15%); less dense, lacking haversian systems, lamellae
are not in a concentric layers but in plates or bars termed trabeculae which branch and
unite with one another to form an irregular meshwork. Contains red bone marrow (fills
the open spaces between sponge). Spongey bone is used for iron and nutrient exchange
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