wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Circulatory System

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.

These cells, in the blood, carry oxygen and give the blood its color.

a)

white blood cells

b)

plasma

c)

platelets

d)

red blood cells

2.

The cells in the blood that help fight germs like bacteria and viruses

a)

red blood cells

b)

platelets

c)

white blood cells

3.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

4.

The job of the heart is to . . .

a)

pump blood around the body.

b)

send food to the small intestines.

c)

break down food.

d)

give energy to the body.

5.

The circulatory system works with the ___________ system to provide our body with oxygen.

a)

respiratory

b)

digestive

c)

muscular

6.

What is the circulatory system made up of?

a)

Lungs, blood, blood vessels

b)

Liver, kidneys, and stomach

c)

Heart, Blood Vessels, and Blood

7.

Veins carry oxygen poor blood back to the heart.

a)

False

b)

True

8.

Arteries carry oxygen rich blood away from the heart.

a)

True

b)

False

9.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
10.
The heart has ___ chambers.
a)
1
b)
2
c)
3
d)
4
11.
What does Deoxygenated mean?
a)
Oxygen-rich
b)
Blood flow
c)
Oxygen-poor
d)
Water Flow
12.
What do Red-Blood cells do?
a)
Carry oxygen from the lungs to the body cells and  transport carbon dioxide from the cells back to the lungs
b)
keeps blood flowing in one direction to the heart and prevent blood from flowing backwards
c)
Collects  blood from the capillaries and drain it into the veins
d)
Bring nutriients to the cells and carries away waste materials.
13.
What does blood do?
a)
Carries Water to cells
b)
Carries Oxygen to cells
c)
Carries Food to cells
d)
All of the above 
14.

Your heart is about the size of your __________.

a)

mouth

b)

fist

c)

show

15.

Which is NOT a way to exercise your heart?

a)

Running

b)

Sitting on the couch

c)

Swimming

16.

Which is a good way to keep your heart healthy?

a)

Eating healthy foods

b)

Playing video games

c)

Eating greasy foods

17.
This chamber of the heart RECEIVES blood returning from the body
a)
Right Atrium
b)
Right Ventricle
c)
Left Atrium
d)
Left Ventricle
18.
What is pulmonary circulation?
a)
Blood travelling to and from the lungs
b)
Blood travelling to and from the body
c)
A blood clot in the lungs
d)
The vessel that brings blood to the lungs
19.
Structure(s) that keep the blood flowing in one direction.
a)
Valve(s)
b)
Septum(s)
c)
Neuron(s)
d)
Bronchiole(s)
20.

These cells play a vital role in defending the body against infection

a)

Leucocytes

b)

Erythrocytes

c)

Blastocytes

d)

Plasmacytes

21.

_______ function in the life-saving process of clotting blood.

a)

Phagocytes

b)

Leucocytes

c)

Erythrocytes

d)

Platelets

22.

The pulmonary circuit...

a)

picks up oxygen and releases carbon dioxide

b)

drops off oxygen and picks up carbon dioxide

c)

provides blood to lung tissue only

d)

makes your skin red when you get hot

23.

The systemic circuit...

a)

picks up oxygen and releases carbon dioxide

b)

drops off oxygen and picks up carbon dioxide

c)

provides blood to lung tissue only

d)

makes your skin red when you get hot

24.

Deoxygenated blood flows...

a)

from body tissue into vena cava into right atrium into right ventricle into pulmonary arteries into the lungs

b)

from body tissue into vena cava into left atrium into left ventricle into pulmonary arteries into the lungs

c)

from the lungs into the pulmonary veins into left atrium into left ventricle into aorta to the rest of the body

d)

from the lungs into the pulmonary veins into right atrium into right ventricle into aorta to the rest of the body

25.

Oxygenated blood flows...

a)

from body tissue into vena cava into right atrium into right ventricle into pulmonary arteries into the lungs

b)

from body tissue into vena cava into left atrium into left ventricle into pulmonary arteries into the lungs

c)

from the lungs into the pulmonary veins into left atrium into left ventricle into aorta to the rest of the body

d)

from the lungs into the pulmonary veins into right atrium into right ventricle into aorta to the rest of the body

26.

The molecule in red blood cells that carry oxygen.

a)

leukosyte

b)

erythrocyte

c)

hemoglobin

d)

fibrinogen

27.

What blood type is the "universal donor" meaning they can give blood to anyone?

a)

Type A

b)

Type AB

c)

Type B

d)

Type O

28.

What blood type is the "universal recipient" meaning they can get blood from anyone?

a)

Type A

b)

Type AB

c)

Type B

d)

Type O