00:01
Today we are talking about pth.
00:03
And although i cannot think of any other acronyms with pth, i challenge you, see if you're creative or if you have a better general knowledge base than me.
00:12
I think about pth is parathyroid hormone.
00:15
And these are just tiny little glands, the parathyroids that are located on the thyroid gland, which you might already be more familiar with at this point.
00:22
By parathyroid, we need to think about calcium.
00:26
And calcium is a very significant mineral in the body.
00:30
Body or technically it's an element, but however you want to think about it.
00:34
It's significant.
00:35
We need it.
00:36
It's very important.
00:38
I can't say enough things about it, but we need to be concerned with how pth acts in response to calcium levels.
00:46
So let's go through these answer options, and then we'll connect the physiology, hopefully, to either debunk or confirm the answer to be true.
00:55
So answer option a is stimulate.
01:00
Stimulate osteoblasts to lay down new bone and we need to think about what's the best answer is and don't mind my writing i'm just trying to get everything on the board we will work through it all i promise and i will work on my pronunciation as well so answer option b is to reduce calcium okay so here we see something about calcium so this is promising now don't immediately cross off answer option a either because sometimes even though we're talking about calcium, we don't necessarily need to see an answer option if it's implied further down the road.
01:47
True will get into the physiology a little bit.
01:50
Answer option c stimulates something else to be released, and this is going to be calcitonin.
02:03
Just another hormone, which is very relevant to this conversation.
02:10
And i'll do a little up arrow to indicate that there's going to be an increase.
02:13
Answer option d, we are going to be talking about produced by thyroid.
02:20
Okay, so interesting because the thyroid, of course, is really close by the parathyroid.
02:28
So maybe we're not actually talking about a hormone.
02:31
Maybe the parathyroid part is a misnomer.
02:35
And then answer option e is going to be released when blight calcium levels fall.
02:42
So when c82 plus goes down.
02:50
Pth goes up, meaning it is stimulated or released.
02:59
Okay.
03:00
So let's talk a little bit about the physiology of things, and then this will make perfect sense.
03:04
So we're talking about parathyroid hormone.
03:08
What happens is its ultimate goal is it's really, try not to give away the answer too explicitly.
03:18
And ultimately, it's going to be answer option e.
03:21
I hate to say it's hard.
03:22
I can't explain it without giving this away because...
