Question 1

Which of the following is not a component of the circulatory system?

Accepted Answer

Digestive system

Answer

Blood

Answer

Heart

Answer

Blood vessels

Question 2

What is the heart responsible for?

Accepted Answer

Pumping blood

Answer

Distributing blood

Answer

Storing blood

Answer

Filtering blood

Question 3

What is the function of red blood cells?

Accepted Answer

To carry oxygen only

Answer

To fight infections

Answer

To clot blood

Answer

To carry oxygen and carbon dioxide

Question 4

Which type of blood vessel is the smallest and has thin walls for exchanging nutrients and waste products?

Accepted Answer

Capillaries

Answer

Lymph vessels

Answer

Veins

Answer

Arteries

Question 5

What is the function of white blood cells?

Accepted Answer

To fight infections

Answer

To clot blood

Answer

To carry oxygen and carbon dioxide

Answer

To carry nutrients and waste products

Question 6

Which of the following is not a risk factor for heart disease?

Accepted Answer

Regular exercise

Answer

High blood pressure

Answer

High cholesterol

Answer

Smoking

Question 7

What is hypertension?

Accepted Answer

A condition where blood pressure is consistently high

Answer

A condition where the heart beats too slowly

Answer

A condition where there is not enough oxygen in the blood

Answer

A condition where the blood cannot clot normally

Question 8

What is the function of valves in veins?

Accepted Answer

To prevent backflow of blood

Answer

To regulate blood sugar levels

Answer

To increase blood pressure

Answer

To remove waste from blood

Question 9

Which type of blood vessel carries blood away from the heart?

Accepted Answer

Arteries

Answer

Veins

Answer

Capillaries

Answer

Lymph vessels

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