In bone formation, the cells that produce the organic matrix are the:
osteoblasts.
osteocytes.
osteoclasts.
chondrocytes.
The Correct Answer is A
A. osteoblasts: These are the bone-forming cells that actively produce and secrete the organic bone matrix.
B. osteocytes: These are mature bone cells that maintain the matrix but are no longer responsible for producing it.
C. osteoclasts: These cells break down or "resorb" bone tissue.
D. chondrocytes: These cells produce the matrix for cartilage, not bone.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. neoplasms: This refers to tumors or new, abnormal growths of tissue, which can be cancerous or benign.
B. Paget's disease: This involves irregular bone remodeling leading to enlarged and deformed bones, but it is not defined primarily by a simple loss of density.
C. osteoporosis: This is the classic age-related condition where bone resorption exceeds bone formation, leading to porous, brittle bones.
D. osteomalacia: This is a softening of the bones, typically due to a vitamin D deficiency, often called "rickets" in children.
Correct Answer is B
Explanation
A. Nucleus: This is an organelle within a cell, not a structure between tissues.
B. Basement membrane: This is the thin, extracellular layer that attaches epithelial tissue to the underlying connective tissue. It is composed of the basal lamina (from the epithelium) and the reticular lamina (from the connective tissue).
C. Lysosome: This is a digestive organelle within a cell.
D. Endoplasmic reticulum: This is an internal cellular membrane system used for protein and lipid synthesis.
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