The Circulatory System Quiz

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The heart beats at least _____ million times during an average person’s life.

A. 2400

B. 500

C. 3500

D. 1000

Prevents the backflow of blood and ensures that blood flows only in one direction.

A. valves

B. aorta

C. ventricle

D. atrium

The heart is enclosed in a protective sac called __________.

A. myocardium

B. capillaries

C. valve

D. pericardium

It lets the blood being pumped from the heart to the lungs.

A. Aortic valve

B. Tricuspid valve

C. Bicuspid valve

D. Pulmonary valve

It lets blood be pumped from the heart to the rest of the body.

A. Aortic valve

B. Bicuspid valve

C. Tricuspid valve

D. Pulmonary valve

The exchange of oxygen, nutrients, and carbon dioxide, and other body wastes happen in the _______.

A. arteries

B. veins

C. capillaries

D. valve

It is responsible for carrying and transporting oxygen, nutrients, antibodies, and other waste products throughout the body.

A. Digestive System

B. Muscular System

C. Circulatory System

D. Skeletal System

A hollow muscular organ about the size heart of a clenched fist.

A. liver

B. heart

C. lungs

D. brain

Are tubes that serve as passageways for blood to reach the different parts of the body.

A. valve

B. blood

C. blood vessels

D. ventricles

It carries oxygen-poor blood from the different parts of the body back to the heart.

A. arteries

B. veins

C. capillaries

D. valve

It carries oxygen-rich blood away from the heart.

A. arteries

B. veins

C. capillaries

D. valve

It refers to a channel or passage through which blood passes.

A. cardio

B. vascular

C. valve

D. veins

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