Multiple choice

Goitre is caused due to ____.

  1. increased production of TSH hormone

  2. increased production of thyroxin

  3. an iodine deficient diet

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Goitre (thyroid enlargement) has multiple causes: iodine deficiency prevents thyroxine synthesis, increased TSH production stimulates thyroid growth, and increased thyroxine production can also cause enlargement. All listed mechanisms independently cause goitre.

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