Topic 5: Nervous System 3 - Integration and Control - Brain (Hypothalamus)

Question 1

What does the hypothalamus regulate? (6)

Answer 1

• ANS (smooth and cardiac muscle, glands)
• parts of endocrine system
• temp (thermostat cells)
• food and water intake, body fluid conc.
• part of limbic system
• coordinates RAS

BASICALLY ALL HOMEOSTATIC FUNCTIONS!! DAMAGE TO IT MEANS LOSS OF HOMEOSTASIS

Question 2

What is the limbic system composed of? (3)

Answer 2

Emotional brain
- cerebrum
- thalamus
- hypothalamus

Question 3

What does the emotional brain regulate?

Answer 3

basic emotions, like fear

Question 4

What does the hypothalamus do in reticular activating system? (2)

Answer 4

• in reticular formation (functional area of brain stem), it alerts the rest of the brain
• receives sensory input for awakening: sets daily rhythms (sleep/awake)