thermoregulation

Question 1

why do ectotherms have a slower metabolism than endo?

Answer 1

they do not have to expend energy on maintain body temp

Question 2

define endothermic neutral zone. in this, how would the body otherwise generate heat?

Answer 2

the temp range in which metabolic rate does not change to maintain homeostasis- normal bodily functions produce heat

Question 3

which part of the brain is responsible for heat regulation?

Answer 3

the hypothalamus

Question 4

what does UNCOUPLING PROTEIN 1 do in brown fat? refer to diffusion of H+ ions

Answer 4

as H+ is pumped out of the matrix of the mitochondria, it diffuses back through UCP1 and produces heat while doing so

Question 5

what is the difference between brown fat and white fat?

Answer 5

brown is more iron rich (causes browning), has larger lipids, more mitochondria

Question 6

what kind of animals is brown fat predominantly found in

Answer 6

placental mammals, new borns, hibernating animals

Question 7

what does the precapillary sphincter control?- refer to temp control

Answer 7

muscles causing vasodilation/constriction