The deficiency of which micro-nutrient causes goiter formation?
Correct answer: C. Iodine
- A. Iron
- B. Zinc
- C. Iodine
- D. Sodium
Explanation
Iodine is essential for synthesis of thyroid hormones. Its deficiency leads to goiter due to overstimulation of thyroid gland by TSH.
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Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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