Question 1

The function of the circulatory system is:

Accepted Answer

to pump blood throughout the body

Answer

to digest food and excrete waste from the body

Answer

to send messages from our brain to our muscles

Answer

to help our bodies move

Question 2

Deoxygenated blood enters the heart through the:

Accepted Answer

right atrium

Answer

left ventricle

Answer

right ventricle

Answer

left atrium

Question 3

Most of our blood is made of:

Accepted Answer

plasma

Answer

platelets

Answer

white blood cells

Answer

red blood cells

Question 4

The component of our blood that fights off germs and infections is:

Accepted Answer

white blood cells

Answer

red blood cells

Answer

platelets

Answer

plasma

Question 5

The largest artery in the human body is the:

Accepted Answer

aorta

Answer

pulmonary vein

Answer

pulmonary artery

Answer

superior vena cava

Question 6

Before oxygenated blood is sent back out to the body, it is in which chamber?

Accepted Answer

left ventricle

Answer

left atrium

Answer

right ventricle

Answer

right atrium

Question 7

Where is blood sent to pick up oxygen?

Accepted Answer

lungs

Answer

brain

Answer

kidneys

Answer

stomach

Question 8

Blood enters the right atrium through the:

Accepted Answer

superior and inferior vena cava

Answer

aorta

Answer

pulmonary vein

Answer

mitral valve

Question 9

What type of blood vessels send blood away from the heart?

Accepted Answer

arteries

Answer

plasma

Answer

capillaries

Answer

veins

Question 10

Blood that is circulating through the lungs is called ______________________ circulation.

Accepted Answer

pulmonary

Answer

coronary

Answer

systemic

Question 11

Which blood component carries oxygen to other cells in the body?

Accepted Answer

red blood cells

Answer

white blood cells

Answer

plasma

Answer

platelets

Question 12

What type of blood vessels send blood into the heart?

Accepted Answer

veins

Answer

capillaries

Answer

platelets

Answer

arteries

Question 13

Blood is carried to the lungs through the:

Accepted Answer

pulmonary artery

Answer

pulmonary vein

Answer

aorta

Answer

inferior vena cava

Question 14

The heart is about the size of your:

Accepted Answer

fist

Answer

arm

Answer

brain

Answer

leg

Question 15

The human heart has how many chambers?

Accepted Answer

4

Answer

3

Answer

2

Answer

6

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