1 degree every 5 - 10 minutes
5 - 10 degrees every minute
1 - 5 degrees every 10 minutes
Maintenance of a stable internal environment at cell's optimum conditions.
Controlled changes in internal environment based on reactions taking place
Maintenance of a fluctuating internal environment
Concentration of glucose
Everything that is regulated has a
or set point that
mechanisms aim to maintain.
are used to detect slight deviations from this value.
Receptor are connected to control centres that switch
e.g. muscles and glands, on or off.
The value constantly
in a narrow range around the set point.
Value stays at the set point constantly
Deviation from norm resulting in further changes in same direction away from norm
Deviation from norm results in a change in the opposite direction, back to the norm.
Enzyme-controlled reactions occur at optimum rate
Enzyme-controlled reactions occur at slowest rate, as enzymes denature
It is the most comfortable temperature
Enzymes would denature and reactions would seize
Reactions would occur too slowly for body to remain alive
Reactions would occur too quickly for body to stay alive
Reactions would occur too quickly for body to remain alive
Enzymes would denature and reactions would stop occurring
To keep body temperature at a constant
To detect changes in temperature
To switch effectors on and off
Controlled muscle contractions
Route of blood flow
选择要在Apple App Store上查看的Topgrade应用程序。