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DIY SOLUTIONS FOR YOUR HEALTH

GSE

Thyroid Hormones

The Thyroid Follicles - T4 / T3 thyroid hormone production site

The functional units of the thyroid gland are spherical follicles - balls of follicular cells with hollow centers - each follicle consists of:

–  Thyroid follicular cells (simple cuboidal type, aka. thyroid epithelial cells, follicular epithelial cells, thyrocytes);  form the outside boundary . . .

–   Filled with a viscous material called colloid - which contains mostly glycoprotein thyroglobulin (Tg) molecules, that provide:

✔ The glycoprotein backbone for synthesis and storage of thyroid hormones

✔  A convenient depot for iodine storage and retrieval - when external iodine availability is scarce or erratic.

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