pit gland physio Flashcards
what types of loops are included in negative feedback (3)?
- ultra short loop
- short loop
- long loop
give an example of a positive feedback loop?
b4 ovulation; estradiol effect on HPA
which hypothalamic center is a satiety center?
ventromedial nucleus (VMN)
lesions in the ______nucleus result in obesity
ventromedial
the _____nucleus has a role in control of appetitie
arcuate nucleus
which hypothalamic center is a hunger center?
lateral hypothalalmus
which hypothalamic center is a Thermoregulation- cooling center, and a thirst center ?
anterior hypothalamus
which hypothalamic center is a thermoregulation - heating center
posterior hypothalamus
median eminence is part of the ?
hypothalamus
the hypothalamus is located in the ___Ventricle and is part of the ____ of the brain
3rd; diencephalon
what are the 3 components of the adenohypophysis?
- pars tuberalis
- pars distalis
- pars intermedia
The _______ is the first part of the portal circulation between the hypothalamus and the anterior pituitary
primary plexus
The area of the hypothalamus where the portal vessels arise?.
median eminence
which lobe has the neural cells?
posterior pit
The posterior pituitary is connected to the hypothalamus by the_____?
hypothalamohypophysial tract
what does the hypothalamohypophysial tract consist of (2)?
composed of the axons from the supraoptic and paraventricular nuclei
prolactin is released by which cells (2)?
lactotroph + mammosomatotroph
GH is released by _____ + _________
mammosomatotroph + somatotroph
FSH is released by ______
gonadotroph
gonadotrophs release which hormones (2)
LH + FSH
mammosomatrophs release which hormones?
prolactin + GH
what cell types are most common in human ant pit?
somatotrope
Which three pituitary hormones have a common α subunit but different β subunits which determine hormone specificity?
TSH, LH, FSH, (+hcG)
what are the tropic hormones(4)?
ACTH, FSH, LH, TSH
