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5 gru 2022 · The thyroid follicles are the structural and functional units of a thyroid gland. These are spherical, and the wall is made up of a large number of cuboidal cells, the follicular cells. These follicular cells are the derivates of the endoderm and secrete thyroid hormone.
30 paź 2023 · 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.
1 mar 2009 · Physiology. Purpose of thyroid gland is to produce T4 and T3, which regulate metabolism, increase protein synthesis and increase oxygen consumption in all cells in body; T4 and T3 are also important for growth and development, and maturation of peripheral and central nervous system.
Thyroid follicles are composed of a single layer of epithelial cells (thyroid follicular cells) that surround a closed cavity (follicular lumen) filled with colloid, a concentrated solution of thyroglobulin. From: Endocrinology (Sixth Edition), 2010
Thyroid Follicles - spherical follicles of varying size (50 to 500 µm) in which thyroid hormones are stored. Colloid - lumen of each follicle is filled with the gel-like mass called colloid. It is mostly the protein thyroglobulin (pink) and bound thyroid hormones (triiodothyronine and tetraiodothyronine (or thyroxin)).
Follicles are the structural and functional units of a thyroid gland. They are spherical with a wall made up of cuboidal cells, the follicular cells. The central lumens act as storage compartments filled with colloid composed mostly of thyroglobulin.
Structure of the thyroid. The thyroid gland is made up of a large number of individual functional units called thyroid follicles. Each follicle consists of a single layer of follicular cells surrounding a pool of colloid, giving it an unmistakable appearance histologically (Fig. 7.4).
