Thermoregulation Flashcards
1
Q
Different forms of heat exchange
A
Conduction- physical contact
Convection- fluid flow
Radiation- emission of radiant heat
2
Q
How is body temperature regulated
A
Negative feedback loops
body temp -> hypothalamus -> muscle shivering
3
Q
What are some of the major effectors
A
4
Q
What are some of the strategies used to conserve or shed heat?
A
5
Q
How is counter-current exchange useful in thermoregulation?
A
The exchange allows most of the heat to be transferred (opposite directions)
- veins return warm blood -> body
- arteries transport blood -> tongue
- warm blood -> cold feet
6
Q
Endotherms and Ectotherms
A
Endotherms- produce substantial body heat regardless of environment
Ectotherms- depends on external sources
Mammals use 10x more energy than reptiles
7
Q
Homeotherms and Heterotherms?
A
Homeotherms- constant body temperature
Heterotherms- allows surrounding environment to effect
