Ch. 14 Regulation of Body Fluid Compartments Flashcards
What is osmosis?
fluid that shifts from low to high concentration until the solutions are equal concentration; no energy required
What is difussion?
How does is occur?
what is an example?
- moving from a high to low concentration until equal, no energy is required
- through the random movement of ions and molecules
- exchange of oxygen and carbon dioxide betweeen the pulmonary capillaries andand alveoli
What is osmotic pressure?
the amount of hydrostatic pressure needed to stop the flow of water by osmosis
What is osmolality?
the concentration of solute (how many particles there are)
what is the sodium potassium pump?
uses energy to move sodium from the cell into the ECF (extracellular fluid)
what is active transport?
energy being used to go against the concentration gradient
what is the usual daily urine volume in the adult?
1 to 2 L
what are the chief solutes in sweat?
sodium, chloride, potassium
The lungs normally eliminate wate vapor at a rate of approximately ____ every day.
300 mL
The usual loss through the GI tract is ___- ___ daily.
100- 200 mL
The bulk of fluid is reabsorbed into what intestinal tract?
small intestines
What is the osmolality in serum?
280-300 mOsm/kg water
what is the osmolality in urine?
200-800 mOsm/kg water
BUN is made up of ____.
Urea
creatine is the end product of ____ _____.
muscle metabolism
