The Endocrine Glands · NCERT Biology

The hormone 'Thyrocalcitonin' (TCT) is secreted by the thyroid gland and functions to:

  1. Increase blood glucose levels
  2. Lower blood calcium levels
  3. Regulate sleep-wake cycles
  4. Stimulate RBC production
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Correct answer: Lower blood calcium levels

Thyrocalcitonin is a protein hormone secreted by the parafollicular cells of the thyroid. It plays a significant role in calcium homeostasis by reducing blood calcium levels when they are too high.

Difficulty: Medium Question 8 of 20

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