Thermoregulation

Question 1

Thermoregulation

Answer 1

Temperature deviation detected by hypothalamus

Question 2

Methods used to increase heat loss or decrease heat production

Answer 2

More sweating
Vasodilation
Hairs lie flat on skin
Reduced metabolic rate
Behavioral mechanisms

Question 3

Methods used to decrease heat loss or increase heat production

Answer 3

Erect body hairs
Vasoconstriction
More shivering
Less sweating
Behavioral mechanisms

Question 4

Endotherms at low and high temps

Answer 4

Use physiological, anatomical and behavioral mechanisms to maintain internal body temp within narrow margins
At low temps, increase rate of respiration, oxygen consumption to release more energy as heat
At high temps, decrease rate of respiration, oxygen consumption to release less energy as heat

Question 5

Ectotherms at low and high temps

Answer 5

Rely on behavioral mechanisms to try and maintain an optimum temperature but will generally show a greater range of temperatures
Rate of respiration and oxygen consumption depends almost solely on the external temperatures