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12 Cards in this Set
- Front
- Back
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Thyroid Gland
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An endocrine gland w/right and left lobes on either side of trachea
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Isthmus
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mass of tissue connecting lobes of thyroid gland
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Pyramid lobe
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fingerlike projection of isthmus; in front of trachea
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Thyroid follicle epithelium
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microscopic sherical sacs make up most of the thyroid glands
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Follicular cells
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form walls of follicle (extend to lumen of follicle)
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Thyroid hormones-
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function regulate metabolism and activity of nervous system
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Thyroxine
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T4
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Triiodothyronine
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T3
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Parafollicular cells (C cells)
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can be embedded w/in follicle or between follicles
produces Calcitonin |
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Calcitonin
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Lowers blood levels of calcium; increases calcium in bones (regulates calcium homeostasis)
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Parathyroids
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embedded in the posterior surfaces of lateral lobes of the thyroid gland
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Parathyroid hormone
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PTH- increases blood calcium and magnesium levels
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