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Side ASide B
A molecule that is polar and attracts water and easily dissolves in water.
molecule that don't dissolve in water because they are nonpolar (lipids)
part of plasma membrane with hydrophilic heads and hydrophobic tails facing inward, sandwich style. Impermeale to hydrophilic molecules, ions used for salt and pH balance must...
2/3 of our fulids in ICF. chemical reactions for metabolism happen here, overall negative charge. Major molecules: Mg+, **K+**, PO3^4-
all body fluid outside of the cells. 1/3 of our fluid. Major molecules: **NA+**, NACO3-, Cl-
Fluid outside of the 80% of our ECF is interstitial.
forces fluid out of a space due to pressure.
fluid flows into a space via osmosis (presence of solutes)
movement of water from an area of lower solute concentration to an area of higher concentration
unit of concentration, measured in Osmoles per Liter (think moles from chemistry)
daily water intake must equal output. water gain vs. water loss.
in hypothalmus monitor ECF osmolarity and when it gets too high, it stimulates the cortex to create thirsty sensation. Which also stimulates hypothalmus to release ADH. ADH stimulates...
negative feedback loop between hypothalmus and kidneys. kidneys reabsorb water if too much water and dilute/excrete in urine, and absorb if dehydrated, making uring more concentrated...
sensible/insensible water loss
sensible - noticeable, sweat, urine, feces, etc. insensible - light perspiration, and respiration.