wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Cardiovascular System

Total questions: 90

Worksheet time: 49mins

Name
Class
Date
1.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

2.

Arteries carry oxygen rich blood away from the heart.

a)

True

b)

False

3.

Veins carry oxygen poor blood back to the heart.

a)

False

b)

True

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

a)

head

b)

fist

c)

hand

d)

foot

6.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
7.
The circulatory system works with the ___________ system to provide our body with oxygen.
a)
respiratory
b)
digestive
c)
muscular
d)
skeletal
8.
The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 
a)
respiratory 
b)
digestive
c)
skeletal
d)
nervous
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.
White blood cells
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
11.

What part of your blood carries oxygen to your cells?

a)

platelets

b)

red blood cells

c)

white blood cells

d)

plasma

12.

What part of your blood carries nutrients, wastes, and hormones, antibodies, and other chemicals?

a)

platelets

b)

red blood cells

c)

white blood cells

d)

plasma

13.

What part of your blood fights infections?

a)

platelets

b)

red blood cells

c)

white blood cells

d)

plasma

14.

What part of your blood helps your blood clot when cut?

a)

platelets

b)

red blood cells

c)

white blood cells

d)

plasma

15.

What type of blood vessel takes blood away from the heart?

a)

arteries

b)

veins

c)

capillaries

16.

What type of blood vessel brings blood back to the heart?

a)

arteries

b)

veins

c)

capillaries

17.

What type of blood vessel has thick, elastic and muscular walls

a)

arteries

b)

veins

c)

capillaries

18.

What type of blood vessel has one-way valves that allow blood to only move in one direction?

a)

arteries

b)

veins

c)

capillaries

19.

What type of blood vessel is so thin that white blood cells can squeeze out of through the blood vessel walls?

a)

arteries

b)

veins

c)

capillaries

20.

What type of blood vessel is where oxygen, nutrients, carbon dioxide, and wastes enter and leave the blood?

a)

arteries

b)

veins

c)

capillaries

21.

What side of the heart are the atrium?

a)

the upper side

b)

the lower side

c)

the right side

d)

the left side

22.

What side of the heart are the ventricle?

a)

the upper side

b)

the lower side

c)

the right side

d)

the left side

23.

What side of the heart receives blood back from the body and sends it to the lungs to be recharged with oxygen?

a)

the upper side

b)

the lower side

c)

the right side

d)

the left side

24.

What side of the heart receives sends oxygen rich blood back to the body

a)

the upper side

b)

the lower side

c)

the right side

d)

the left side

25.

Which letter on the diagram is the left atrium?

a)

A

b)

B

c)

C

d)

D

26.

Which letter on the diagram is the left ventricle?

a)

A

b)

B

c)

C

d)

D

27.

Which letter on the diagram is the right ventricle?

a)

A

b)

B

c)

C

d)

D

28.

Which letter on the diagram is the right atrium?

a)

A

b)

B

c)

C

d)

D

29.

Which letter on the diagram is the aorta?

a)

E

b)

F

c)

G

d)

H

30.

Which letter on the diagram is the vena cava?

a)

E

b)

F

c)

G

d)

H

31.

What is the main organ of the circulatory system?

a)

Lungs

b)

Heart

c)

Capillaries

d)

Veins

32.

Which type of circulation sends blood from the lungs and back?

a)

Pulmonary circulation

b)

Systemic circulation

c)

Arterial circulation

d)

Venous circulation

33.

Where are oxygen and nutrients picked up by the blood?

a)

Arteries

b)

Veins

c)

Capillaries

d)

Alveoli

34.

Which blood vessel carries oxygenated blood to all parts of the body except the lungs?

a)

Aorta

b)

Superior Vena Cava

c)

Inferior Vena Cava

d)

Pulmonary Artery

35.

What is the main function of capillaries?

a)

Deliver oxygen and nutrients to cells

b)

Carry carbon dioxide and waste to the lungs

c)

Return blood from the body to the heart

d)

Pump blood through a network of arteries

36.

Which valves control blood flow from the atria to the ventricles?

a)

Mitral and tricuspid valve

b)

Aortic and pulmonary valve

c)

Superior and Inferior Vena Cava

d)

Capillaries and Alveoli

37.

What is the role of veins in the circulatory system?

a)

Carry oxygenated blood from the lungs to the body's tissues

b)

Carry carbon dioxide and waste towards the heart.

c)

Exchange of nutrients, oxygen, and waste products with tissues

d)

Pump blood through the body

38.

What type of circulation sends blood from the heart to the body and back?

a)

Pulmonary circulation

b)

Systemic circulation

c)

Arterial circulation

d)

Venous circulation

39.

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

a)

It carries oxygenated blood from the left ventricle to the body

b)

It carries deoxygenated blood from the body to the right atrium

c)

It carries oxygenated blood from the lungs to the left atrium

d)

It carries deoxygenated blood from the right ventricle to the lungs

40.

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

a)

To pump oxygenated blood to the body's tissues

b)

To carry deoxygenated blood from the body's tissues to the lungs

c)

To exchange nutrients, oxygen, and waste products with tissues

d)

To return blood from the body to the lungs

41.

What is the function of the red blood cells?

a)

Carry oxygen from the lungs to the body's cells

b)

Carry carbon dioxide from the body's cells to the lungs

c)

Both A and B

d)

None of the above

42.

Which blood vessel carries deoxygenated blood from the upper body to the heart?

a)

Aorta

b)

Superior Vena Cava

c)

Inferior Vena Cava

d)

Pulmonary Artery

43.

What is the role of capillaries in the circulatory system?

a)

They carry oxygenated blood from the lungs to the left atrium

b)

They exchange nutrients and oxygen with tissues at the cellular level

c)

They carry deoxygenated blood from the body to the right atrium

d)

They carry oxygenated blood from the left ventricle to the body

44.

Which type of blood vessels carry blood away from the heart?

a)

Veins

b)

Capillaries

c)

Arteries

d)

Venules

45.

What is the function of the inferior vena cava?

a)

Carry deoxygenated blood from the lower body to the right atrium.

b)

Carry oxygenated blood from the lower body to the right atrium.

c)

Carry deoxygenated blood from the upper body to the right atrium.

d)

Carry oxygenated blood from the upper body to the right atrium.

46.

Put the flow of blood through your heart in order. Start with deoxygenated blood coming to the heart.

a)

Right atrium

b)

Right ventricle

c)

lungs

d)

left atrium

e)

left ventricle

1)
2)
3)
4)
5)
47.

__________are small, colourless cell fragments in our blood that form clots and stop or prevent bleeding.

a)

Plasma

b)

Red blood cells

c)

platelets

d)

capillaries

48.

The heart pumps blood throughout the body through a closed system of tubes. These tubes that carry the blood are called blood vessels. There are three types of blood vessels: (a)   , veins,and capillaries

49.

What carry blood from the body cells back to the heart. This blood contains waste materials.

a)

Veins

b)

Arteries

c)

Capillaries

d)

Vines

50.

If laid end to end, your blood vessels would stretch out to about _______ km!

(About 4 times the distance around the equator!)

a)

240,000 Km

b)

15,000 Km

c)

161,000 Km

d)

123,450 Km

51.

Blood moves from arteries to veins through tiny blood vessels called ?

a)

Arteries

b)

Capillaries

c)

Nerves

d)

Vena Cava

52.

Most of our blood vessels are?

(a)  

53.

At any given time, only about ________ of your body's blood is in your arteries.

a)

10% to 15%

b)

20% to 30%

c)

30% to 40%

d)

40% to 45%

54.

Plasma is 90% _____ and is beige in colour. Plasma contains digested food, chemicals, and waste products.

These substances are carried to and from the cells by the plasma.

a)

Red blood cells

b)

Platelets

c)

Water

d)

Minerals

55.

Red blood cells contain _________ that is red and gives blood its color. It links up with oxygen and carries this oxygen to all parts of the body.

a)

Myoglobin

b)

Red Ferrine

c)

Plasma

d)

Hemoglobin

56.

What percent of blood is liquid?

a)

43%

b)

55%

c)

2%

d)

57%

57.

Which blood cells carry oxygen throughout the body?

a)

Red

b)

White

c)

Plasma

d)

Platelets

58.

Which blood cell fights infection?

a)

RBC

b)

Plasma

c)

WBC

d)

Platelets

59.

Which blood cells that help you stop bleeding if you get a cut?

a)

Red

b)

White

c)

Plasma

d)

Platelets

60.

Platelets are also known as

a)

leukocytes

b)

erthryocytes

c)

thrombocytes

d)

monocytes

61.

White blood cells are also known as

a)

thrombocytes

b)

erthryocytes

c)

monocytes

d)

leukocytes

62.

Which of the following cells are able to leave the bloodstream?

a)

erythrocytes

b)

leukocytes

c)

electrocytes

d)

thrombocytes

63.

Which is the smallest of the 3 blood vessels?

a)

Veins

b)

Arteries

c)

Capillaries

64.

What big blood cells is in the center of picture?

a)

WBC

b)

Platelets

c)

RBC

d)

None

65.

Which blood vessels take blood TO the heart?

a)

Veins

b)

Arteries

c)

Capillaries

66.

Which blood vessels take blood AWAY from the heart?

a)

Veins

b)

Arteries

c)

Capillaries

67.

What are the different blood types?

a)

A

b)

B

c)

AB

d)

O

68.

What antigens are present in blood type A?

a)

A

b)

B

c)

AB

d)

O

69.

What antigens are present in blood type B?

a)

A

b)

B

c)

AB

d)

O

70.

What antigens are present in blood type AB?

a)

A

b)

B

c)

AB

d)

O

71.

What antibodies are present in blood type A?

a)

Anti-A

b)

Anti-B

c)

Anti-AB

d)

None

72.

What antibodies are present in blood type B?

a)

Anti-A

b)

Anti-B

c)

Anti-AB

d)

None

73.

What antibodies are present in blood type O?

a)

Anti-A

b)

Anti-B

c)

Anti-AB

d)

None

74.

Who can donate blood to blood type A?

a)

A

b)

B

c)

AB

d)

O

75.

Who can donate blood to blood type B?

a)

A

b)

B

c)

AB

d)

O

76.

Who can donate blood to blood type AB?

a)

A

b)

B

c)

AB

d)

O

77.

Who can donate blood to blood type O?

a)

A

b)

B

c)

AB

d)

O

78.

What is the universal acceptor blood type?

a)

A

b)

B

c)

AB

d)

O

79.

What is the universal donor blood type?

a)

A

b)

B

c)

AB

d)

O

80.

Irregularly shaped cell fragments that help clot blood

a)

Platelets

b)

Lymph

c)

Plasma

d)

White Blood Cells

81.

Contains hemoglobin, supplies body with oxygen

a)

Plasma

b)

Platelet

c)

White Blood Cell

d)

Red Blood Cell

82.

Fight bacteria and viruses by entering infected tissue, destroying bacteria/viruses and absorb dead blood cells

a)

White Blood Cells

b)

Red Blood Cells

c)

Platelets

d)

Plasma

83.

Select all answers that represent a "Blood Type"

a)

O

b)

AO

c)

BO

d)

AB

e)

A

84.

The liquid part of blood made of mostly water; nutrients, minerals and oxygen are dissolved

a)

Marrow

b)

Plasma

c)

Proteins

d)

Urea

85.

What type of antigens can be found on the surface of RBC's when someone has blood type O?

a)

A

b)

B

c)

AB

d)

none

86.

Which of the following is true about blood type O?

a)

It contains antigen A only.

b)

It contains antigen B only.

c)

It contains both antigen A and antigen B.

d)

It doesn’t contain antigen A or antigen B.

87.

Select all that type B can receive from

a)

A

b)

B

c)

AB

d)

O

88.

Name the proteins on the surface of red blood cells.

a)

Antibodies

b)

Antigens

c)

Plasma

d)

Collagen

89.
which blood type is the universal donor (all people can receive it)?
a)
O
b)
AB
c)
A
d)
B
90.

Not everyone has the same type of Blood.

a)

True

b)

False