Flashcards in Hypothalamus and Nuclei (3 Star!) Deck (18):
1
7 functions of Hypothalamus (TAN HATS)
1. Thirst and water balance
2. Anterior pituitary regulation (adenohypophysis)
3. Neurohypophysis--> makes the hormones released there
4. Hunger
5. Autonomic NS regulation
6. Temperature regulation
7. Sexual urges
2
nuclei that is "master clock" for most of circadian rhythms
suprachiasmatic nucleus (receives input from retina)
3
nuclei regulate parasympathetic NS
Anterior hypothalamus and preoptic nuclei
4
Destruction results in hyperthermia (so cooling)
Anterior hypothalamus
*A/C-> pArasympathetic
5
These two regulate sympathetic NS
Posterior and lateral
6
Produces ADH
supraoptic nucleus
7
stimulation results in savage behavior and obesity
Dorsomedial nucleus (stimulates g.i. tract)
8
Destruction rsults in savage behavior and obesity
Ventromedial nucleus (normally controls satiety; stimulated by leptin)
*craniopharyngioma can destroy; dstruction, you grow ventrally and medially
9
stimulation leads to eating and destruction causes you to starve
Lateral area (inhibited by leptin)
*destruction = you shrink laterally
10
Regulates the release of gonadotropic hormones
Preoptic nucleus
11
Responsible for shivering and keeping you warm in cold temps
Posterior nucleus
12
lesion of posterior nucleus causes wat
poikilothermia (inability to auto-regulate body temp)
13
Releases hormones affecting posterior pituitary
Arcuate nucleus
14
makes oxytocin
paraventricular nuclei
15
2 areas in hypothalamus not protected by BBB
1. OVLT (structure that senses osmolarity of blood)
2. Area postremia (emesis center)
16
Hypothalamus recieves input from what two things
1. limbic system
2. circulating hormones and other chemical mediators
17
5 functions of limbic system (5 F's)
1. Feeding
2. Fleeing
3. Fighting
4. Feeling
5. Fucking (sex)
18