Mod 4. L33

Question 1

nervous system control of thermoregulation

Answer 1

temperature-sensitive neurons in the brain relay information about ambient temperature to parts of the brain, including parts of the hypothalamus (preoptic area)

Question 2

Preoptic Area (POA)

Answer 2

receives information from temperature-sensitive neurons in the skin, body, etc, which are then thought to be integrated with information about the temperature of the brain in order to enact thermoregulatory responses

Question 3

warm-sensitive neurons

Answer 3

leads to physiological and behavioral responses that promote cooling (reduced heat production, increased heat dissipation, cold-seeking behavior)

same principle for cold-sensitive neurons but with heating response

Question 4

mechanism of fever

Answer 4

proinflammatory cytokines (released by various immune cells) cause endothelial cells to synthesize and release prostaglandin E2 (PGE2) which acts upon neurons in the POA to raise the set point