Hypothalamus and limbic system

Question 1

What are the nuclei of the anterior hypothalamus what are functions of each?

Answer 1

• Anterior: Thermoregulation (cooling) . . AC = Air conditioning
• Suprachiasmatic: Circadian rhythms
• Preoptic area: secretes GnRH
• Supraoptic: secretes ADH
• Paraventricular: Secretes oxytocin, CRH, and TRH

Question 2

what are the nuclei of the Tuberal hypothalamus and what does each do?

Answer 2

• Arcuate: Secretes GHRH, dopamine, and GnRH (pulsatile), and regulates appetite
• Lateral: regulates hunger, inhibited by leptin (Damage leads to anorexia and weight loss)
• Ventromedial: regulates satiety, stimulated by leptin (Damage lead to obesity and savage behavior)
• Dorsomedial: Regulates hunger (Stimulates leads to obesity and savage behavior)

Question 3

What are the nuclei in the posterior hypothalamus and what does each do?

Answer 3

• Posterior: thermoregulation (warming)

- Mammillary: memory

Question 4

Bilateral damage to hippocampus causes what

Answer 4

anterograde amnesia

Question 5

Describe Kluver-Bucy syndrome?

Answer 5

• Damage to bilateral amygdala
• no fear
• disinhibition
• Extremely curious
• Hyperorality
• Docility
• Hypersexuality