The given diagram shows some of the parts of human skeleton.The function of the curves, labelled as I, II, III and IV, in the vertebral column is to
Correct answer: D. Increase the strength and flexibility of the vertebral column
- A. Allow extension and flexion of the arms and legs
- B. Provide attachment for the pectoral and pelvic girdles
- C. Protect the spinal cord enclosed in the vertebral column
- D. Increase the strength and flexibility of the vertebral column
Explanation
The correct answer is Option D: The curves of the vertebral column increase its strength and flexibility. These curves help to distribute mechanical stress as the body moves, maintaining balance and enabling a range of motion. Option A is incorrect because the arms and legs are not directly affected by the vertebral column's curves. Option B is incorrect because the curves do not serve as primary attachment points for the pectoral and pelvic girdles. Option C, while partially true in terms of the vertebral column's function, does not address the specific purpose of the curves themselves, which is more about flexibility and distributing loads.
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About Human Skeleton
The human skeleton provides support, protects organs, enables movement with muscles and stores minerals while bone marrow produces blood cells. Questions cover the axial and appendicular skeleton, types of bones and joints, cartilage, ligaments and tendons, and the difference between fixed, slightly movable and freely movable joints.
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