ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
THYROID
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stem cells and bone cells
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Blood cells and fat cells
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Follicular cells and parafollicular cells
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Nerve cells and endothelial cells
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Detailed explanation-1: -In between these thyroid follicles or within the wall of the thyroid follicles, we find the small C cells, also known as Parafollicular cells. These are derived from neural crest cells and secrete polypeptide hormone known as calcitonin.
Detailed explanation-2: -Parafollicular cells, also called C cells, are neuroendocrine cells in the thyroid. The primary function of these cells is to secrete calcitonin. They are located adjacent to the thyroid follicles and reside in the connective tissue.
Detailed explanation-3: -The key difference between parafollicular and follicular cells is the type of secretion each type of cell makes. Parafollicular cells secrete calcitonin, whereas follicular cells secrete thyroxin and triiodothyronine. The thyroid gland is a main endocrine gland.