Why Are the Vessels of the Venous System, Particularly the Small

question 11

Multiple Choice

Why are the vessels of the venous system, particularly the small venules and veins, termed capacitance vessels?

• A) They transmit and maintain the head of perfusion pressure.
• B) They can alter their capacity to maintain adequate perfusion.
• C) They determine the afterload on the left ventricle.
• D) They maintain a constant environment for the body's cells.

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Definitions:

Experimental Method

A method of determining whether variables are related, in which the researcher manipulates the independent variable conceptually similar to a dependent variable and controls all other variables either by randomization or by directexperimental control.

Variables Manipulation

The process of altering or changing variables within an experiment to observe their effects on other variables.

Internal Validity

The degree to which a study establishes a trustworthy cause-and-effect relationship between a treatment and an outcome.

Variable Changes

Alterations in the value or status of variables within an experiment or study.