Lecture+41_Endocrine6_Revised-5

Research has yet to show that calcitonin is actually

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Unformatted text preview: olesterol) Dietary vitamin D Sunlight Vitamin D3 Hydroxyl group (OH) Liver enzymes 25-OH-vitamin D3 OH group PTH Plasma Ca2+ Kidney enzymes Plasma PO43− 1,25-(OH)2-vitamin D3 (active vitamin D) Promotes intestinal absorption of Ca2+ and PO43− Fig. 19-27, p. 730 Calcitonin •  Produced by the C cells of the thyroid gland. –  Secreted in response to an increase in plasma Ca2+ which pre7y much doesn’t happen –  Lowers plasma Ca2+ by inhibi6ng ac6vity of bone osteoclasts. –  Research has yet to show that calcitonin is actually necessary •  possibly important during...
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This note was uploaded on 03/21/2014 for the course NPB 101 taught by Professor Fuller,charles/goldberg,jack during the Spring '08 term at UC Davis.

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