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  2. Parafollicular cell - Wikipedia

    en.wikipedia.org/wiki/Parafollicular_cell

    Parafollicular cells secrete calcitonin, a hormone that participates in the regulation of calcium metabolism. Calcitonin lowers blood levels of calcium by inhibiting the resorption of bone by osteoclasts, and its secretion is increased proportionally with the concentration of calcium. [7]

  3. Calcitonin - Wikipedia

    en.wikipedia.org/wiki/Calcitonin

    Calcitonin is a 32 amino acid peptide hormone secreted by parafollicular cells (also known as C cells) of the thyroid (or endostyle) in humans and other chordates [5] in the ultimopharyngeal body. [6] It acts to reduce blood calcium (Ca 2+), opposing the effects of parathyroid hormone (PTH). [7]

  4. Endocrine gland - Wikipedia

    en.wikipedia.org/wiki/Endocrine_gland

    The alpha and beta cells are the endocrine cells in the pancreatic islets that release insulin and glucagon and smaller amounts of other hormones into the blood. Insulin and glucagon influence blood sugar levels. Glucagon is released when the blood glucose level is low and stimulates the liver to release glucose into the blood. Insulin ...

  5. Calcium metabolism - Wikipedia

    en.wikipedia.org/wiki/Calcium_metabolism

    The plasma total calcium concentration is in the range of 2.2–2.6 mmol/L (9–10.5 mg/dL), and the normal ionized calcium is 1.3–1.5 mmol/L (4.5–5.6 mg/dL). [4] The amount of total calcium in the blood varies with the level of plasma albumin, the most abundant protein in plasma, and therefore the main carrier of protein-bound calcium in the blood.

  6. Endocrine system - Wikipedia

    en.wikipedia.org/wiki/Endocrine_system

    The alpha cells of the pancreas secrete hormones to maintain homeostatic blood sugar. Insulin is produced and excreted to lower blood sugar to normal levels. Glucagon, another hormone produced by alpha cells, is secreted in response to low blood sugar levels; glucagon stimulates glycogen stores in the liver to release sugar into the bloodstream ...

  7. List of human endocrine organs and actions - Wikipedia

    en.wikipedia.org/wiki/List_of_human_endocrine...

    The pituitary gland (or hypophysis) is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain, and rests in a small, bony cavity (sella turcica) covered by a dural fold (diaphragma sellae).

  8. List of human hormones - Wikipedia

    en.wikipedia.org/wiki/List_of_human_hormones

    Normalize blood clotting and vascular tone, zinc and copper levels, cell oxygen levels, and use of fat stores for energy; Assist in thyroid function and bone growth by osteoblasts; Resilience in bone, teeth, gums, joint, tendon, ligament and skin healing by regulating collagen; Nerve function and healing by regulating myelin

  9. Parathyroid gland - Wikipedia

    en.wikipedia.org/wiki/Parathyroid_gland

    The parathyroid gland produces and secretes parathyroid hormone in response to low blood calcium, which plays a key role in regulating the amount of calcium in the blood and within the bones. Parathyroid glands share a similar blood supply, venous drainage, and lymphatic drainage to the thyroid glands.