(Zoom in for clearer picture) Part B - Regulation of Blood Calcium Calcium blood
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Part B - Regulation of Blood Calcium
Calcium blood levels are very tightly regulated with the aid of parathyroid hormone and vitamin D. The statements below represent actions that take place during times of low blood calcium, times of high blood calcium, or neither.
ResetHelp Increased vitamin D activation leads to decreased calcium absorption from the intestines. ase secretion Less calcium is reabsorbed by the kidneys. decreased breakdown of bone of PTH Parathyroid glands decrease secretion of PTH PTH and vitamin D stimulate increased breakdown of bone Increased production of PTH stimulates activation of vitamin D Occurs During Times of Low Blood Calcium Occurs During Times of High Blood Calcium Does Not Occur During Regulation of Blood CalciumExplanation / Answer
During too low- parathyroid gland increase secretion of PTH
PTH and vitamin D stimulate the breakdown of bone.
During high blood calcium- less calcium is reabsorbed by the kidneys
osteoclasts are inhibited leading to the increased breakdown of bone
parathyroid gland decrease secretion of PTH
Increased PTH stimulate activation of Vit D
Does not occur- Increased vit D decreases calcium absorption from the intestines.
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