Question

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

• A. Blood
• B. Heart
• C. Lung
• D. Capillary

Answer 1

The correct option is C

Lung

The correct option is C:

Explanation of the correct option :
Lungs:

1. Lungs are the components of the human respiratory system.

Explanation of the incorrect options :

Blood

1. Blood is a part of the human circulatory system.
2. It helps in the transport of oxygen and nutrients around the body as well as the expulsion of carbon dioxide and other excretory wastes out of the body.

Heart:

1. Heart is an important organ of the circulatory system which helps in pumping the blood throughout the body.

Capillaries:

1. Capillaries are minute blood vessels and are an important part of the human circulatory system.

Final answer: Lungs are not a component of the human circulatory system.