00:01
Hello students.
00:03
Our question is what controls the release of hormones from the anterior pituitary? we know that our pituitary gland is composed of two lobes, two lobes, interior and posterior.
00:18
So we have to find out how it is controlled.
00:22
So hormones released from the hypothalamus.
00:25
And next is the secondary messenger.
00:27
This is incorrect.
00:28
Posterior pituitary as i have already told that the pituitary gland composed of the anterior and the posterior lobe so this posterior lobe cannot control the anterior pituitary now next is the beta cells of the pancreas no cytokines no so the first option is the correct answer the hormones released from the hypothelmus hormones which are released from the hypothelmus so we know that anterior pituitary is the endocrine gland.
01:07
Endocrine gland means its hormone have to travel down via the bloodstream, via the bloodstream to reach the target cell, to reach the target organ.
01:21
But we do not know that whether this organ needs this hormone or not.
01:28
So it has to be controlled by something.
01:31
Who controls the anterior pituitary? so hypothalamus control the anterior pituitary.
01:38
How does the hypothalamus control the interior pituitary is? so hypothalamus release the horroletalmers.
01:45
So how hypothalamus control the anterior pituitary via the releasing hormones.
01:52
Releasing hormones.
01:54
So releasing hormones can be of two types.
01:57
These can be of stimulating type and these can be of inhibiting type.
02:06
Inhabiting type.
02:08
So if they are of the stimulating type, what will happen? they will enhance the anterior pituitary to release more, to release more hormones, to release hormone.
02:21
But if they are of the inhibiting type, they will stop the interior pituitary.
02:28
They will stop the interior pituitary to release the hormone.
02:34
So this is how their level is controlled.
02:37
So this is how their level is controlled.
02:40
Now, next question.
02:43
It is for nursing mammal, which is nursing.
02:47
So young one, when they suck, so they release, they will tend to release oxytocin from the posterior.
02:55
Pituitary gland in the mammal.
02:57
How does this happen? so first is the negative feedback? no.
03:02
If the young if the young one sucks and the posterior pituitary gland stop the oxytocin, then we can say that it is a negative feedback.
03:12
But we can see that after the young one suck, the posterior pituitary gland secret the oxytocin...