med surg ch 14.1

maintenance of a constant internal equilibrium in a biologic system that involves positive and negative feedback mechanisms

a solution with an osmolality higher than that of serum

a solution with an osmolality lower than that of serum

a solution with the same osmolality as serum and other body fluids. 

osmolality falls within normal range for serum (280-300 mOsm/kg)

the number of osmoles (the standard unit of osmotic pressure) per liter of solution.  it is expresses as millosmoles per liter (mOsm/L); describes the concentration of solutes or dissolved particles.

the number of osmoles (the standard unit of osmotic pressure) per kilogram of solution.  expressed as mOsm/kg.  is used more often than the term osmolarity to evaluate serum and urine

fluid tension within the extracellular fluid or intracellular fluid that describes the relationship between the solutes and water, primarily determined by fluid osmolality