The Increase in Effective Blood Volume That Results from Venoconstriction

question 23

Multiple Choice

The increase in effective blood volume that results from venoconstriction is the

• A) venous reserve.
• B) capacitance of veins.
• C) vessel mobilization.
• D) venous return.
• E) vessel residual.

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Definitions:

Absolute Threshold

The minimum intensity of a stimulus that one can perceive, marking the boundary between non-detection and detection of a stimulus.

Weber's Law

A principle in psychology that states the smallest change in a stimulus, such as weight or brightness, that can be detected is a constant proportion of the stimulus level.

Absolute Threshold

The minimum stimulus intensity required to detect a stimulus at least half the time.

Sensory Adaptation

The mechanism by which sensory receptors reduce their sensitivity to sustained stimuli as time progresses.