Every Job Should Carry with It a Margin for Error

question 47

True/False

Every job should carry with it a margin for error.

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Definitions:

SA Node

Sinoatrial node, the heart's natural pacemaker, initiating the electrical impulses that set the rate and rhythm of your heartbeat.

AV Node

The atrioventricular node, a part of the cardiac conduction system that controls the heart rate by slowing the electrical current before it passes from the atria to the ventricles.

Pacemaker

A device implanted in the body that uses electrical impulses to regulate the beating of the heart or a natural group of cells in the heart that performs this function.

Calcium Channel Blockers

A class of medications that inhibit the entry of calcium ions through calcium channels, used to treat hypertension and heart disease.