Specific Gravity Is Defined as the Weight of Substances Dissolved

question 19

Multiple Choice

Specific gravity is defined as the weight of substances dissolved in a substance as compared with those found in:

• A) distilled water
• B) pure alcohol
• C) mineral water
• D) iodine

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Definitions:

AV Node

A part of the heart's electrical system that helps regulate the heart rate by delaying the transmission of electrical impulses.

SA Node

The sinoatrial node, often referred to as the SA Node, is the natural pacemaker of the heart. It generates electrical impulses that initiate the heartbeat, controlling heart rhythm.

Atrioventricular Bundle

A bundle of heart muscle fibers responsible for conducting electrical impulses from the atria to the ventricles of the heart.

Arterial Wall

The layer of tissue constituting the outer structure of an artery, comprising three layers: the intima, media, and adventitia, crucial in maintaining blood pressure and circulation.