00:01
Okay, in order to stop this question, we have to talk about calcium regulation in the body, okay? calcium is well regulated in our body, okay? and when the levels of calcium rise, it is going to be called hypercalcemia.
00:20
And when the levels of calcium decrease, it is going to be called hypocalcemia.
00:28
So what happens when there is hypercalcemia? okay, when there is hypercalcemia, a hormone is going to be released by the parapollicular cells of the thyroid gland, okay? and it is going to release a hormone called calcitonin.
00:52
This calcitonin is going to decrease the levels of calcium, and it is going to make the calcium levels to fall until that back to normal.
01:07
Okay? so calcitonin, the function of calcitonin is to decrease the levels of calcium.
01:12
Of calcium in the blood.
01:15
And what about hypocalcemia? what happens when there is hypocalcemia? well, when there is hypocalcemia, the parathyroid glands are going to produce a hormone called pth pthorideoric hormone.
01:33
Okay.
01:34
And this hormone is going to act in order to guise the levels of calcium in the blood.
01:40
Okay? and it is going to work until the calcium levels return back to the blood.
01:45
Normal.
01:46
Okay, some effects of the pth are going to be mediated by vitamin d...