Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

The Human Circulatory System: Parts and Functions

Total questions: 15

Worksheet time: 45mins

Name
Class
Date
1.

Where is deoxygenated blood likely to be found in the circulatory system?

a)

At the beginning of the pulmonary circuit.

b)

In the aorta.

c)

In the left atrium.

d)

In the right ventricle.

2.

What circuit completes the circulation of blood from the right side of the human heart to the lungs and back?

a)

The systemic circuit.

b)

The coronary circuit.

c)

The pulmonary circuit.

d)

The lymphatic circuit.

3.

What is the job of the pulmonary circuit in the human body?

a)

To carry blood to the lungs so carbon dioxide can be released and oxygen can be picked up.

b)

To transport oxygenated blood from the heart to the rest of the body.

c)

To filter toxins from the blood before it reaches the heart.

d)

To regulate blood pressure throughout the circulatory system.

4.

What is the role of platelets in the circulatory system?

a)

To help with blood clotting and prevent bleeding.

b)

To transport oxygen to the body's tissues.

c)

To fight infections and diseases.

d)

To regulate body temperature.

5.

What is the function of the heart in the circulatory system?

a)

To filter toxins from the blood.

b)

To pump blood throughout the body.

c)

To produce hormones that regulate blood pressure.

d)

To store oxygen for the body.

6.

What type of blood do veins typically carry?

a)

Oxygenated blood

b)

Deoxygenated blood (except for pulmonary veins)

c)

Nutrient-rich blood

d)

Carbon dioxide-rich blood

7.

What is the purpose of the systemic circuit in the human body?

a)

To supply blood rich in oxygen and nutrients to the body.

b)

To transport carbon dioxide from the body to the lungs.

c)

To regulate body temperature through blood flow.

d)

To filter waste products from the blood.

8.

What is the role of the vena cava in the circulatory system?

a)

It carries oxygenated blood from the lungs to the heart.

b)

It carries deoxygenated blood from the body back to the heart.

c)

It distributes oxygenated blood to the body.

d)

It removes waste products from the blood.

9.

Which part of the human body is NOT considered a part of the circulatory system?

a)

The heart.

b)

The lungs.

c)

The thyroid.

d)

The aorta.

10.

What is the role of capillaries in the circulatory system?

a)

To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

b)

To pump blood throughout the body.

c)

To store blood for later use.

d)

To produce red blood cells.

11.

What is the difference between the systemic and pulmonary circuits?

a)

The systemic circuit carries deoxygenated blood to the body, while the pulmonary circuit carries oxygenated blood to the lungs.

b)

The systemic circuit carries oxygenated blood to the body, while the pulmonary circuit carries deoxygenated blood to the lungs.

c)

The systemic circuit carries blood to the heart, while the pulmonary circuit carries blood to the brain.

d)

The systemic circuit is responsible for nutrient absorption, while the pulmonary circuit is responsible for waste removal.

12.

What type of blood do arteries typically carry?

a)

Deoxygenated blood

b)

Oxygenated blood (except for pulmonary arteries)

c)

Carbonated blood

d)

Nutrient-rich blood

13.

What are the main components of the human circulatory system?

a)

The heart, blood vessels, and blood.

b)

Lungs, trachea, and bronchi.

c)

Stomach, intestines, and liver.

d)

Kidneys, bladder, and urethra.

14.

What is the function of red blood cells in the circulatory system?

a)

To transport oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues to the lungs.

b)

To fight infections and protect the body against diseases.

c)

To regulate body temperature and maintain homeostasis.

d)

To produce hormones that control various bodily functions.

15.

What is the significance of the aorta in the circulatory system?

a)

It is the largest artery that carries oxygenated blood from the heart to the body.

b)

It is a vein that carries deoxygenated blood to the heart.

c)

It is a small artery that supplies blood to the lungs.

d)

It is a chamber of the heart that pumps blood to the body.