- A Acromegaly, due to continued action on already-fused bone ends
- B Goitre, from compensatory enlargement of the thyroid gland
- C Pituitary dwarfism, since long bone growth plates have not yet fused
- D Tetany, caused by a fall in blood calcium levels
Correct answer: C. Pituitary dwarfism, since long bone growth plates have not yet fused
Explanation: In children, growth hormone deficiency causes pituitary dwarfism because the epiphyseal plates are still open. In adults, deficiency does not affect height since growth plates have already fused.
Concept context
The endocrine glands, hormone classification and mechanism of action, and negative feedback regulation.