Human Respiratory and Circulatory Systems

Front

What is the main function of the respiratory system?

Back

To bring oxygen into the body and remove carbon dioxide.

Front

What structure filters, warms, and moistens the air before it enters the lungs?

Back

Nose.

Front

What is the role of the atrium in the heart?

Back

To receive blood that comes into the heart.

Front

What is the function of the left ventricle?

Back

To pump oxygenated blood to the body.

Front

What is the function of the right ventricle?

Back

To pump deoxygenated blood to the lungs.

Front

What is the trachea?

Back

The windpipe that connects the larynx to the bronchi.

Front

What are alveoli?

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the diaphragm?

Back

A muscle that helps in breathing by contracting and relaxing.

Front

What is the role of the larynx?

Back

To produce sound and protect the trachea against food aspiration.

Front

What is the function of the bronchial tubes?

Back

To carry air to and from the lungs.