PSL300H1 Lecture Notes - Lecture 23: Homeostasis, Thermometer
Document Summary
Homeostasis isn"t equilibrium v homeostasis is not equilibrium: equilibrium is having everything balance, homeostasis is not about an equal state of both ecf and icf. Fluid: but the term ecf also includes the plasma component of blood. Can look at internal environment by analyzing blood plasma using. Feedback control v how is it that the body is able to get back to homeostasis after it deviates from the normal range? v example: the fish tank: there is the homeostatic environment of the fish tank. It has a specific set point, a specific temperature that should be kept constant: if the water cools down suddenly, then that is an external change. This external change needs to be fixed: the water being below the setpoint acts as a stimulus, but the fish tank has to be able to sense it. There is a thermometer in the fish tank: this thermometer tells the control box that something is wrong.
