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CIRCULATORY SYSTEM

Total questions: 15

Worksheet time: 12mins

Name
Class
Date
1.

What are the main organs of the circulatory system?

a)

brain, spine, & nerves

b)

heart, arteries, & veins

c)

heart, lungs, & veins

d)

skin, nails, & hair

2.

What are the smaller branched tubes that connect the arteries and veins called?

a)

mini veins

b)

blood vessels

c)

capillaries

3.

What system does the circulatory system work with to obtain oxygen for the body?

a)

digestive system

b)

cardiovascular system

c)

nervous system

d)

respiratory system

4.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

5.

Veins carry oxygen poor blood back to the heart.

a)

False

b)

True

6.

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.

7.

How does the heart work?

a)

It pumps blood first to the lungs, back to the heart and then around the rest of the body.

b)

It pumps blood first to the rest of the body, back to the lungs and then to the heart.

c)

It pumps blood around the rest of the body, back to the heart and then to the lungs,

8.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
9.
The main function of the circulatory system is 
a)
To give the body structure and support
b)
Excrete waste
c)
transport blood, nutrients, and gases throughout the body
d)
to transport messages from the body to the brain
10.
What part of blood is responsible for carrying oxygen and carbon dioxide to body cells?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
11.
What part of blood is responsible for fighting infections?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
12.
What do the arteries do?
a)
pumps blood to the heart
b)
pumps blood to and from the heart
c)
carry's blood away from the heart 
d)
a muscle 
13.
Your blood is made up of which of the following...
a)
plasma, red blood cells, blue blood cells
b)
white and red blood cells
c)
plasma and platelets
d)
plasma, red blood cells, white blood cells, and platelets
14.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

15.

The heart is about the size and shape of your . . .

a)

head

b)

fist

c)

hand

d)

foot