Physiology & Biochemistry · single question
Thyroid hormone (T3/T4) is stored within the:
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Correct answer: C. Thyroid follicular cells / colloid
- A. Incorrect – the pituitary secretes TSH, which stimulates the thyroid; it does not store thyroid hormone.
- B. Incorrect – they secrete PTH for calcium regulation.
- C. Correct – thyroid hormone is synthesized and stored bound to thyroglobulin in the colloid of thyroid follicles (follicular cells).
- D. Incorrect – it releases TRH, not thyroid hormone.
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