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Neuro Mike Rose > Hormones > Flashcards

Flashcards in Hormones Deck (20):
1

Vasopressin (ADH)

Released by Post. Pituitary

Stimuli: increased blood osmolarity, hypovolemia, hypotension

Response: Increase water resorption in kidney and vasoconstriction.

2

Oxytocin

Released by Post. Pituitary

Stimuli: Suckling and uterine stimulation

Response: milk ejection reflex and uterine contraction

*Also bonding hormone although this is likely produced elsewhere.

3

Growth Hormone

Released by Anterior Pituitarty: flat peG

Stimuli: exercise, stress, sleep (80% during sleep)

Effects: Increased growth and metabolism

4

Prolactin

Released by Anterior Pituitarty: flat Peg

Stimuli: suckling, stress

Effects: development of mammary tissue and lactation

5

Thryoid Stimulating Hormone

Released by Anterior Pituitarty: flaT peg

Stimuli: exposure to cold temp

Effects: increased secretion of TH --> increased metabolism --> increased heat production

6

Luteinizing Hormone

Released by Anterior Pituitarty: fLat peg

Stimulus: Regulated by hypothalamic peptide

Effects:
Men- required for spermatogenesis. Stimulates testosterone

Women- initiates ovulation and stimulates progesterone

7

Follicle Stimulating Hormone

Released by Anterior Pituitarty: Flat peg

Stimulus: Regulated by hypothalamic peptide

Effects: Men: spermatogenesis
Women: development of ovarian follicle

8

Adrenocorticotropic hormone

Released by Anterior Pituitarty: flAt peg

Stimulus: stress

Effects: Secretion of cortisol from Ad cortex

9

Beta- endorophin

Released by Anterior Pituitarty: flat pEg

Stimuli - stress

Effects - opiate like --> analgesia (runner's high)

10

Thryotropin- releasing hormone

Increases TSH release

11

Gonadotropin releasing hormone

Increased FSH and LH

12

Corticotropin releasing hormone

Increased ACTH and BEP

13

Growth Hormone releasing hormone

Increased GH

14

Somatostatin

Decreased GH release

15

Dopamine

Decreased prolactin

16

Cholecystokinin (CCK)

Stimulus: Released from duodenum in response to calories.

Effects: Increase digestion via: gallbladder contraction, pyloric constriction, gastric contractions.

Stimulate satiety: increase gastric mechanoreceptor activity/sensitivity --> to increase vagal afferents --> Increase NTS --> decreased food intake

17

Ghrelin

Stimuli: empty stomach/fasting

Effect: increased appetitie by increasing Neuropeptide Y activity in ARC.

18

Leptin

Hormone released by adipocytes to decrease food intake.

Site of action: 1.) SNT in brainstem via vagus 2.) hypothalamus (Paraventricualar Nucleus PVN, Lateral Hypothalamic Area LHA , and Arcuate Nucleas ARC)

19

Neuropeptide Y

Neuropeptide Y neurons project to PVN and LHA to increase eating.

Leptin acts in ARC to inhibit Neuropeptide Y

20

Melanocortin

Melanocortin neurons project both to PVN and LHA to decrease eating.

Leptin acts in ARC to activate Melanocortin