Functions of the Hypothalamus Hypothalamic Neurosecretory Cells Hypothalamic hypophysiotropic hormones Complexities of the hypothalamic-pituitary interactions adenohypophyseal hormones
100
Name the 3 areas of the medial basal hypothalamus that are referred to the endocrine hypothalamus.
median eminence, arcuate nucleus, VMH
100
What are the two types of neurosecretory cells
magnocellular and parvicellular
100
What is the function of hypophysiotropic hormones
To modulate the release of anterior pituitary hormones
100
What hormone does TRH release from the anterior pituitary?
TSH
200
What are the functions of magnocellular cells
To release neurohormones into the circulatory system
200
What are the 6, well established hypophysiotropic hormones that regulate release of anterior pituitary hormones?
TRH, CRH, GnRH, GHRH, Somatostatin (SOM), dopamine
200
What hormone release is inhibited by dopamine?
prolactin
300
What are the functions of the parvicellular cells
To release hypothalamic hormones into the hypophyseal portal system
300
what is known about the control of alpha-MSH release from the anterior pituitary
GABA and dopamine inhibits alpha-MSH release. CRH, HT and NE stimulate alpha-MSH release. No hypophysiotropic hormone other than these classic neurotransmitters has been identified to regulate alpha-MSH secretion.
300
What hormones does GnRH release from the anterior pituitary?
LH and FSH
400
What is a neuroendocrine transducer
Convert neural input into hormonal output
400
What classic neurotransmitter also serves as a hypophysiotropic hormone?
Dopamine
400
What hormones does CRH release from the anterior pituitary?
ACTH and beta-endorphin
500
Give four examples of neuroendocrine transducers
1) magnocellular neurons that release oxytocin and vassopressin into the circulatory system. 2) parvicellular neurons that secrete releasing/inhibiting hormones into the hypophyseal portal system, 3) the adrenal medulla that responds to sympathetic stimu
500
What two hormones are NOT hypophysiotropic hormones because they are released from the magnocellular neurons in the posterior pituitary directly into the circulatory system?
vasopressin and oxytocin
500
What hormone release is stimulated by GHRH and inhibited by somatostatin (SOM)?
Growth hormone (GH)






Neuroendocrinology - The hypothalamic hormones

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