A Hematocrit Measures

question 28

Multiple Choice

A hematocrit measures

• A) percentage of RBC in packed blood.
• B) percentage of WBC in packed blood.
• C) percentage of platelets in packed blood.
• D) both percentage of RBC in packed blood and percentage of WBC in packed blood.
• E) All of these answer choices are correct.

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Definitions:

Actin

One of two major proteins of muscle; makes up thin filaments in myofibrils of muscle fibers. See also myosin.

Myosin

A type of protein found in muscle tissue as a thick filament that plays a key role in muscle contraction and movement.

Sarcolemma

Plasma membrane of a muscle fiber; also forms the tubules of the T system involved in muscular contraction.

Plasma Membrane

The lipid bilayer that surrounds a cell, regulating the passage of substances in and out of the cell.