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A Researcher Collects Data Comparing People with and Without a Disorder

question 21

Multiple Choice

A researcher collects data comparing people with and without a disorder. The researcher is particularly interested in inherited tendencies that are not part of the disorder but that occur with much greater frequency in the people afflicted with it. The researcher is conducting a(n)


Definitions:

Right Atrium

The right upper chamber of the heart that receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle.

Blood

A vital fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away.

Pulmonary Veins

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

Left Atrium

The upper left chamber of the heart that receives oxygenated blood from the pulmonary veins and pumps it into the left ventricle.

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