Within a Physiologic Range,an Increase in Left Ventricular End-Diastolic Volume

question 50

Multiple Choice

Within a physiologic range,an increase in left ventricular end-diastolic volume (preload) leads to a(n) :

• A) increased force of contraction.
• B) decrease in refractory time.
• C) increase in afterload.
• D) increase in repolarization.

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Definitions:

Sympathetic Nervous System

A part of the autonomic nervous system that prepares the body for physical activity and is often referred to as the fight-or-flight response system.

Fight-or-Flight

A physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival, prompting either aggressive resistance or escape.

CNS

The central nervous system, consisting of the brain and spinal cord, responsible for processing and transmitting information throughout the body.

Calm

A state of peace and tranquility, with an absence of stress, agitation, or excitement.