NCLEX Question for Oncotic pressure

NCLEX Review Question

Oncotic pressure refers to

a.the osmotic pressure exerted by proteins.
b.the number of dissolved particles contained in a unit of fluid.
c.the excretion of substances such as glucose through increased urine output.
d.the amount of pressure needed to stop flow of water by osmosis.

Correct Answer: A
the osmotic pressure exerted by proteins.
Rationale: Oncotic pressure is a pulling pressure exerted by proteins, such as albumin.

the number of dissolved particles contained in a unit of fluid.
Rationale: Osmolality refers to the number of dissolved particles contained in a unit of fluid.

the excretion of substances such as glucose through increased urine output.
Rationale: Osmotic diuresis occurs when the urine output increases due to excretion of substances such as glucose.

the amount of pressure needed to stop flow of water by osmosis.
Rationale: Osmotic pressure is the amount of pressure needed to stop the flow of water by osmosis.

Posted in: MSN NCLEX