thermo regulation Flashcards
what is hyperthermia
the state in which temperature rises above a set point
what is hypothermia
the state where the internal temperature drops below a set point
what is the difference between hyperthermia and hypothermia
the two are different as one is related to the rise of temperature above a certain point whereas the temperature below a set point.
what is an endotherm
animals that retain heat by generating metabolic activity
what do endotherm do in hot environment
increase heat loss and restrict heat loss
what do endotherms do in cool environment
increase heat gain and reduce heat loss
what are the structural features of endotherm
insulation, brown adipose tissue, shape and size
what are behavioral features of endotherms
changing locations, huddling, torpor
what are the physiological features
vasomotor control, evaporative heat loss, countercurrent exchange, thermogenesis
what are the homeostatic mechanism
hormone negative feedback
why is insulation important
used in thermoregulation by trapping heat in a layer close to the skin
why is brown adipose issues
used in thermoregulation, outermost layer of fat, large amount of blood vessels and mitochondria used to generate heat and generate of metabolic heat
why is shape and size important
used in thermoregulation, by reducing or increasing surface area to volume ratio
why is huddling important
is a behavioral response, used to reduce heat loss by decreasing the surface area to volume ratio of a group of animals
why is shutting down in extreme conditions important
is a behavioral response, in a hot temperature they change to slowing the process of metabolic rate, reduce body temperature. In a cold temperature animals use hibernation by a metabolic rate that just maintains life
