A hormone whose over secretion in pregnancy stimulates melanocytes in skin to produce brown pigment melanin which darkness the skin is produced by:
Correct answer: B. Median pituitary lobe
- A. Anterior pituitary lobe
- B. Median pituitary lobe
- C. Posterior lobe
- D. Both a & b
Explanation
Melanocyte-stimulating hormone is associated with the intermediate or median lobe of the pituitary and increases melanin production. The anterior and posterior lobes are not the expected source in this traditional endocrine classification.
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