Which substance gives bone most of its hardness and resistance to compression?
Correct answer: B. Mineral salts in the bone matrix
- A. Collagen fibres in the periosteum
- B. Mineral salts in the bone matrix
- C. Yellow marrow inside the medullary cavity
- D. Synovial fluid around the bone ends
Explanation
Mineral salts, mainly calcium phosphate, make bone hard and resistant to compression. Collagen provides flexibility and tensile strength, while marrow and synovial fluid have different functions.
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About Skeletal and Muscular Systems
The skeletal and muscular systems include bone structure, joints, cartilage, the axial and appendicular skeleton, and the roles of ligaments and tendons. They also cover skeletal muscle organization, the sliding filament mechanism, neuromuscular contraction, and common differences between voluntary skeletal muscle, cardiac muscle and smooth muscle.
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