By 1860, the Richest 10 Percent of the Population in the Cities

question 10

Multiple Choice

By 1860, the richest 10 percent of the population in the cities held what percentage of the wealth?

• A)70 to 80 percent
• B)25 percent
• C)50 percent

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Definitions:

Conducting System

A network of specialized cardiac muscle cells responsible for initiating and distributing the electrical impulses that stimulate heart contraction.

AV Valve

The atrioventricular (AV) valve regulates blood flow from the atria to the ventricles in the heart.

Bundle of His

A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.

Pulmonary Veins

Blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart.