6B Edrolo Chapter Flashcards
The four methods of heat transfer
1 - Conduction
2 - Convection
3 - Evaporation
4 - Radiation
Explain conduction
The transfer of heat through physical contact
Explain convection
Transfer heat via movement of a liquid or gas between areas of different temperature
Explain evaporation
The loss of heat through the conversion of water from liquid into gas form.
Explain radiation
The transfer of heat through electromagnetic waves
How does thermal regulation occur?
Through a negative feedback stimulus-response system
In terms of thermoregulation, species can be divided into two different groups:
- Endotherms
- Ectotherms
Endotherms are also known as
Warm blooded species
How do endotherms generate the majority of their heat:
Through metabolic processes
Ectotherms are also known as
Cold blooded species
How do ectotherms generate the majority of their heat:
Through environmental sources
In the case of thermoregulation, the Modulator is:
Hypothalamus
What is the preferred core body temperature of the body?
37 degrees celcius
Effecters of responses in thermoregulation when it is too hot (5)
- Effector - Sweat glands
Response - Sweating - Effector - Small blood vessels in skin
Response - Dilation of arterioles - Effector - Cerebral cortex
Response - Change in behavior - Effector - Arrector pili muscles
Response - Flattening of hair - Effector - Cells
Response - Decrease in metabolic rate
Effecters and responses in thermoregulation when it is too cool (6)
- Effector - Skeletal muscles
Response - Shivering - Effector - Small blood vessels in skin
Response - Constriction of arterioles - Effector - Cerebral cortex
Response - Change in regulation - Effector - Arrector pili muscles
Response - Lifting of hair - Effector - Cells
Response - Increase in metabolic rate - Effector - Brown fat
Response - Burning of triglycerides
