Q1. [2] medium thorough-understanding
Deficiency of growth hormone during childhood leads to dwarfism, while its excess can cause gigantism. What does this tell us about the role of the pituitary gland in human growth and development? Which broader part of the brain oversees the functioning of the pituitary gland?
Generated by claude-sonnet-4-6 · 2026-06-26 01:02 · grounding rag
Model Answer
The pituitary gland secretes growth hormone, which regulates body growth. Its deficiency causes dwarfism (stunted growth) and excess causes gigantism, showing that the pituitary gland directly controls the rate and extent of human growth and development.
The hypothalamus (part of the forebrain) oversees and regulates the functioning of the pituitary gland.
Source: Chapter 6, Control and Coordination
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Explanation
- The question has two parts — address both: (1) what the pituitary's role is, and (2) which brain region controls it.
- The key inference is that growth hormone from the pituitary is essential for normal growth — too little or too much disrupts it. This shows the pituitary's direct regulatory role.
- The hypothalamus controls the pituitary gland; this is the expected factual recall for the second part.
- Don't just describe dwarfism/gigantism — the examiner wants the conclusion about the pituitary's role.