Regulation of body temperature

Question 1

three systems that regulate body temperature

Answer 1

sensors in the periphery and in the core
an integrator in the hypothalamus
an effector system that adjusts the production and loss of heat

Question 2

when the skin become chilled over the entire body, three physiologic processes to increase the body temperature take place:

Answer 2

1. shivering increases heat production
2. sweating is inhibited to decrease heat loss
3. vasoconstriction decreases heat loss

Question 3

is the center that controls the core temperature

Answer 3

hypothalamic integrator

Question 4

it sends out signals intended to reduce the temperature, that is, to decrease heat production and increase heat loss.

Answer 4

when the integrator detects heat

Question 5

the integrator sends out signals to increase heat production and decrease heat loss

Answer 5

when the cold sensors are stimulated

Question 6

increases cellular metabolism and hence heat production

Answer 6

release of epinephrine

Question 7

when the warmth- sensitive receptors in the hypothalamus are stimulated, the effector systems sends out signals that initiate

Answer 7

sweating and peripheral vasodilation

Question 8

what are the factors that affect the body temperature?

Answer 8

1. age
2. diurnal variations (circadian rhythms)
3. exercise
4. hormones
5. stress
6. environment

Question 9

many older people, particularly those over 75 years, are at risk of _____ (temperature below 36°C or 96.8°F)

Answer 9

hypothermia