Renal 2

The following 3 definitions are intended to be answered as a set

Define Homeostasis:

Tendency of a solution to resist expansion of intracellular volume
Water gradient across the skin
Maintenance of a nearly constant internal environment
effective gradient for water (count of dissolved particles)

Define osmolality:
Maintenance of a nearly constant internal environment
Tendency of a solution to resist expansion of intracellular volume
effective gradient for water (count of dissolved particles)
Water gradient across the skin

Define tonicity:
Tendency of a solution to resist expansion of intracellular volume
effective gradient for water (count of dissolved particles)
Maintenance of a nearly constant internal environment
Water gradient across the skin

	Concentration of solute particles (Lower, Same, Higher)		Will cause cells to (Shrink, Same, Swell)
Hyperosmotic		Hypertonic
Isosmotic		Isotonic
Hypoosmotic		Hypotonic

Which is able to cross a semi-permeable membrane?
Proteins
Cl^-
Na⁺
CO(NH₂)₂

A 300 mM solution of NaCl would have an osmolality of?
600 mM
150 mM
10 mM
300 mM

A 300 mM solution of glucose would have an osmolality of?
600 mM
150 mM
300 mM
10 mM

Which statement is false?
Most of the fluid in the body is in blood
Females have slightly less water per kilogram than males
Intracellular fluid makes up 2/3 of the body's fluids
There is about 2.8L of fluid in plasma within the body

Which is the correct ranking for water loss?
Kidneys>Skin>Gut>Lungs
KidneysKidneys>Skin>Lungs>Gut
Kidneys>Gut>Skin>Lungs

Which has a strong gradient out of the cell?
Potassium
Sodium
Calcium
Chloride

Which is not an important electrolyte?
HCO₃^-
F^-
Protein anions
Mg²⁺