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Worksheets

Body Systems

Total questions: 18

Worksheet time: 18mins

Name
Class
Date
1.

What do red blood cells do?

a)

Stop bleeding by sticking together and forming clots.

b)

Carries nutrients and blood cells throughout the body.

c)

Carries oxygen throughout your body.

d)

Help fight disease.

2.

What do white blood cells do?

a)

Help fight disease.

b)

Stop bleeding by sticking together and forming clots.

c)

Carries nutrients and blood cells throughout your body.

d)

Carry oxygen throughout your body.

3.

What do platelets do?

a)

Carry oxygen throughout your body.

b)

Help fight disease

c)

Stop bleeding by sticking together and forming clots.

d)

Carries nutrients and blood cells throughout the body.

4.

Arteries carry blood

a)

To the heart

b)

Away from the heart

5.

These are the smallest blood vessels.

a)

Arteries

b)

Veins

c)

Capillaries

6.

What parts make up the circulatory system?

a)

Heart

b)

Blood vessels

c)

Brain

d)

Blood

7.

What are the three main types of blood vessels?

a)

Arteries

b)

Bronchioles

c)

Veins

d)

Capillaries

8.

What are the top chambers of the heart called?

a)

Atrium

b)

Ventricles

9.

What are the bottom chambers of the heart called?

a)

Atrium

b)

Ventricle

10.

The liquid part of the blood is called

a)

Platelets

b)

Plasma

c)

Red blood cells

d)

White blood cells

11.

These are the spongy organs that expand to fill with air.

a)

Heart

b)

Brain

c)

Lungs

d)

Eyes

12.

This is the a tube in your throat that air flows through.

a)

Bronchi

b)

Bronchioles

c)

Alveoli

d)

Trachea

13.

What are the alveoli?

a)

They are tiny sacs that make up most of the lungs. They inflate like tiny balloons when you inhale.

b)

A tube in your throat that leads to the lungs.

c)

The spongy organ that brings in oxygen from the air and releases carbon dioxide.

14.

The trachea branches into two smaller tubes called

a)

Alveoli

b)

Lungs

c)

Bronchi

15.

Your lungs bring in oxygen from the air.

a)

True

b)

False

16.

What do you exhale?

a)

Oxygen

b)

Carbon Dioxide

17.

This muscle controls breathing in and out.

a)

Heart

b)

Bicep

c)

Diaphragm

d)

Tricep

18.

This makes up most of the lungs.

a)

Bronchiole

b)

Alveoli

c)

Trachea