Free Printable Exploring the Cardiovascular System

1.

Which chamber of the heart receives oxygenated blood from the lungs?

a)

Right atrium

b)

Left atrium

c)

Right ventricle

d)

Left ventricle

2.

What is the main function of red blood cells in the cardiovascular system?

a)

Defence against infection

b)

Transport of oxygen

c)

Blood clotting

d)

Regulation of temperature

3.

Which blood vessel carries blood away from the heart to the body?

a)

Vein

b)

Artery

c)

Capillary

d)

Venule

4.

What is the name of the valve between the left atrium and left ventricle?

a)

Tricuspid valve

b)

Mitral valve

c)

Pulmonary valve

d)

Aortic valve

5.

Which part of the heart is responsible for pumping blood to the lungs?

a)

Left ventricle

b)

Right ventricle

c)

Left atrium

d)

Right atrium

6.

What is the average resting heart rate for a healthy adult in beats per minute?

a)

40–60

b)

60–100

c)

100–120

d)

120–140

7.

Which vessel has the thinnest walls and allows exchange of substances between blood and tissues?

a)

Artery

b)

Vein

c)

Capillary

d)

Arteriole

8.

What is the main component of plasma in blood?

a)

Water

b)

Protein

c)

Glucose

d)

Salt

9.

Which structure initiates the electrical impulse that causes the heart to beat?

a)

AV node

b)

SA node

c)

Bundle of His

d)

Purkinje fibres

10.

What is the name of the largest artery in the body?

a)

Pulmonary artery

b)

Aorta

c)

Carotid artery

d)

Femoral artery

11.

Which blood vessel returns deoxygenated blood from the body to the heart?

a)

Pulmonary vein

b)

Aorta

c)

Vena cava

d)

Coronary artery

12.

What is the normal systolic blood pressure for a healthy adult, measured in mmHg?

a)

80–100 mmHg

b)

100–120 mmHg

c)

120–140 mmHg

d)

140–160 mmHg

13.

Which layer of the heart wall is responsible for contraction?

a)

Endocardium

b)

Myocardium

c)

Epicardium

d)

Pericardium

14.

What is the equation for cardiac output?

a)

$Cardiac\ Output = Heart\ Rate \times Stroke\ Volume$

b)

$Cardiac\ Output = Stroke\ Volume \div Heart\ Rate$

c)

$Cardiac\ Output = Heart\ Rate + Stroke\ Volume$

d)

$Cardiac\ Output = Heart\ Rate - Stroke\ Volume$

15.

Which of the following is NOT a function of the cardiovascular system?

a)

Transport of nutrients

b)

Removal of waste products

c)

Production of hormones

d)

Regulation of body temperature

16.

What is the approximate volume of blood in an average adult human?

a)

2–3 litres

b)

4–6 litres

c)

7–9 litres

d)

10–12 litres

17.

Which vessel carries oxygenated blood from the lungs to the heart?

a)

Pulmonary artery

b)

Pulmonary vein

c)

Aorta

d)

Vena cava

18.

What is the main function of platelets in the blood?

a)

Oxygen transport

b)

Immune response

c)

Blood clotting

d)

Hormone production

19.

Which part of the heart has the thickest wall?

a)

Right atrium

b)

Left atrium

c)

Right ventricle

d)

Left ventricle

20.

What is the normal temperature of human blood in degrees Celsius?

a)

34°C

b)

36°C

c)

38°C

d)

40°C

Exploring the Cardiovascular System

Total questions: 20

Worksheet time: 15mins

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