Which of the following hormone is predominantly responsible for bone weakening in older women?
Correct answer: B. Oestrogen.
- A. Progesterone.
- B. Oestrogen.
- C. Parathyroid hormone.
- D. Calcitonin.
Explanation
Oestrogen normally suppresses bone resorption and helps maintain bone mass; its decline after menopause allows osteoclast activity to exceed bone formation. Students may choose parathyroid hormone because it also promotes calcium release from bone, but the characteristic hormonal factor in older women is oestrogen deficiency.
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