follicular cells, otherwise known as thyroid cells. Inside the follicles there is a very viscous substance elaborated by the aforementioned cells: the colloid.
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Interposed between the thyroid follicles there is a connective tissue in which there are parafollicular cells whose functions are related to the parathyroid glands.
The thyroid is a highly vascularized gland, the blood supply is guaranteed by the upper and lower thyroid arteries which give rise to a dense network of capillaries. A venous plexus that enters the internal jugular cells, on the other hand, guarantees the blood to flow back from the gland.
Size and weight of the thyroid gland depend on age and sex and, in any case, can vary significantly from individual to individual. On average, in adults, the thyroid gland weighs around 20 grams and has a transverse diameter of approximately 6 centimeters.
and mood; it is important for intestinal functioning; it can affect the heartbeat and is even involved in the metabolism of calcium. All these functions are mediated by the hormones produced by this gland: triiodothyronine (or T3); thyroxine (or tetraiodothyronine or T4 ) and calcitonin.
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