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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]
Calcitonin receptor. The calcitonin receptor (CT) is a G protein-coupled receptor that binds the peptide hormone calcitonin and is involved in maintenance of calcium homeostasis, [5] particularly with respect to bone formation and metabolism. [6][7][8]
The diagnostic program should be performed within hours, in parallel with measures to lower serum calcium. [10] Treatment of choice for acutely lowering calcium is extensive hydration and calcitonin , as well as bisphosphonates (which have effect on calcium levels after one or two days).
The other part is from the caudal extensions of the fourth pharyngobranchial pouches which results in the parafollicular calcitonin-secreting cells. [5] These two structures are apparent by 16 to 17 days of gestation. Around the 24th day of pregnancy, the foramen cecum, a thin, flask-like diverticulum of the median anlage develops. At ...
Bone resorption is resorption of bone tissue, that is, the process by which osteoclasts break down the tissue in bones [1] and release the minerals, resulting in a transfer of calcium from bone tissue to the blood. [2] The osteoclasts are multi-nucleated cells that contain numerous mitochondria and lysosomes. These are the cells responsible for ...
Anatomical terminology. [edit on Wikidata] The endocrine system[1] is a messenger system in an organism comprising feedback loops of hormones that are released by internal glands directly into the circulatory system and that target and regulate distant organs. In vertebrates, the hypothalamus is the neural control center for all endocrine systems.
Some schools in the district, including Laguna Creek and Sheldon High School, started classes as early as 7:45 a.m. prior to the new law and must now begin at 8:30. The changes are more subtle ...
[2] α-CGRP is a 37-amino acid neuropeptide and is formed by alternative splicing [3] of the calcitonin/CGRP gene located on chromosome 11. β-CGRP is less studied. In humans, β-CGRP differs from α-CGRP by three amino acids and is encoded in a separate, nearby gene. [4] The CGRP family includes calcitonin (CT), adrenomedullin (AM), and amylin ...