what does the law of mass balance say?
that if the amount of a substance in the body is to remain constant, any input must be offset by an equal loss
what does input of a substance into the body come from?
metabolism or the outside environment
how does output occur?
through metabolism or excretion
what is clearance?
the rate at which a material is removed from the blood by excretion, metabolism, or both
what do the liver, kidneys, lungs and skin all clear substances from?
what remains homeostasis without being in equilibrium with each other?
cells and extracellular fluid
what creates chemical disequilibrium?
the fact that most solutes are concentrated in either one compartment or the other
what creates electrical disequilibrium?
the fact that cations and anions are not distributed equally between the body compartments
what results in a state of osmotic equilibrium?
water moving freely between cells and the extracellular fluid
how does water always move?
from hyposmotic to hyperosmotic
what is the formula for mass flow?
mass flow = concentration x volume flow
does homeostasis equal equilbrium?