🔬 Exploring thyroid anatomy unveils the distinctive roles of follicular cells and para-follicular cells. #FollicularVsParafollicularCells elucidates the contrast between thyroid's major players. Follicular cells primarily produce thyroid hormones like T3 and T4, essential for metabolism, while para-follicular cells, also known as C cells, contribute calcitonin, regulating calcium levels. Keywords shaping this understanding include thyroid anatomy, hormone production, metabolism, calcitonin secretion, endocrine system, thyroid follicles, parafollicular cells, thyroid function, hormonal balance, thyroid health, thyroid hormones, calcitonin function, endocrinology, cellular biology, thyroid gland, hormonal regulation, thyroid physiology, thyroid research, and endocrine signaling. 🦠 #ThyroidCells #EndocrineAnatomy
Follicular cells are responsible for producing thyroglobulin (an iodine rich, inactive form of the thyroid hormones), which is then stored as a semi-solid substance (colloid) in the lumen of the follicles. The colloid stains pink with haematoxylin and eosin (H&E) staining, while the follicular cells have a purple appearance
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. These cells are large and have a pale stain compared with the follicular cells. In teleost and avian species these cells occupy a structure outside the thyroid gland named the ultimobranchial body.

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