Hypothalamus and Nuclei (3 Star!) Flashcards Preview

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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

ADH and oxytocin are stored where

in the posterior pituitary (neurohypophysis),but made in the hypothalamus in the supraoptic (ADH) and paraventricular (OT) nuclei

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