← neuro final Test
5 Written Questions
5 Matching Questions
- 5 alpha reductuase deficiency
- CRH (corticotrophin releasing hormone)
- Vagus nerve
- a conveys info about stretching of stomach walls-deals with satiety
- b secreted by the paraventricular nucleus (PVN) of the hypothalamus in response to stress. goes to anterior pituitary- which then releases ACTH
- c genotype xy- have testes, have male internal strutures, have MIH.
lack reductase for DHT-dont have male external genitalia.
become male when go thro puburty.
- d conveys info about current fat supplies-INDUCE SAITEY
thought to be involved in long-term energy balance.
Mutation discovered in mice who were obese and lacked gene for the leptin protein-or can lack leptin receptor.
binds to leptin receptors (ObRs) in arcuate nucleus, brain stem.
- e peptide prod in stomach, duodenum
potent appetite stimulant. levels rise 1-2 hrs before meal, drop off after meal.
if overprod, can lead to obesity
stim NPY neuronal firing rate, dec firing rate POMC neurons
5 Multiple Choice Questions
- FIRST ONE. triggers the release of TSH
TSH (Thyroid-Stimulating Hormone = thyrotropin)
- in arcuate nucleus. Activation of the AgRP/NPY neurons increases appetite and metabolism, whereas activation of the POMC/CART neurons has the opposite effect.
Leptin inhibits neuronal firing of NPY/ AgRP neurons and stimulates POMC neurons.
- PEPTIDE. huge surge stimulates female ovulation. egg released. secreted by anterior pituitary gland
increase release of estrodial/progesterone.
triggers testosterone too
in males-makes more testosterone
- early "SATIEY hormone" acting to end a meal. release is stim by food in duodenum. acts both as brain nt and peripherally to close sphincter betw stomach and duodenum
- triggered by involved with positive feedback- stop making GHRH when levels too high- start making GHRIH.
5 True/False Questions
Glucagon → pancreas stops secreting insulin-then glucagon stimulates LIVER to to convert stored sugar(glycogen) to glucose that can be released into the blood. RAISES blood glucose levels.
ADH (anti-diuretic hormone → post pituitary secretes vasopressin.
Estradiol → steroid hormone or glucocorticoid
SRY Gene → PEPTIDE hormone. secreted from pancreas, increases uptake of glucose into cells and stimulates the liver to store sugar; causes DECREASE blood glucose levels.
infusion into brain near arcuate inhibits NPY production. -INDUCE SATIETY
Oxytocin → PEPTIDE. made in hypothalumus, secreted by the posterior pituitary gland- general circulation.
target is smooth muscle in breast tissue and uterus for milk release/contracting out a baby