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30 paź 2023 · The thyroid gland is a bilobular endocrine gland that is found in the neck, anterior and inferior to the larynx. Grossly, the gland appears brownish-red and the left and right lobes are connected by an isthmus. The main purpose of this organ is to produce, store and secrete the iodine-based hormones triiodothyronine (T3) and thyroxine (T4).
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Parenchyma - secretory follicles constitute the functional units of the gland. 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.
5 gru 2022 · Histochemical analyses of the patterns of activity and localization of 5-nucleotidase (CD73) through the use of anti-5' nucleotidase ecto antibody in the thyroid gland provide valuable insight into several pathologies associated with the thyroid gland.
14 cze 2023 · It is one of the key histological features observed on light microscopy, as it stains bright pink with haematoxylin and eosin (H&E). Apically, thyrocytes have numerous zonula occludens (tight junctions), zonula adherens (anchoring junctions), and macula adherentes (spot desmosomes) that holds the cells together.
1 mar 2009 · 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.
5 gru 2022 · The thyroid gland is a vital butterfly-shaped endocrine gland situated in the lower part of the neck. It is present in the front and sides of the trachea, inferior to the larynx. It plays an essential role in regulating the basal metabolic rate (BMR) and stimulates somatic and psychic growth, beside ….
242 Thyroid Gland - Thyroid Follicular Cell View Virtual EM Slide Remember that the follicular cells secrete thyroglobulin into the colloid and subsequently resorb it and break it down to produce thyroid hormones.
