Respiratory System

Front

What is the function of the diaphragm muscle?

Back

The diaphragm is a dome-shaped muscle that contracts and relaxes to help in breathing by creating a pressure difference that allows air to flow into the lungs.

Front

What is lung cancer?

Back

Lung cancer is a type of cancer that begins in the lungs and is the leading cause of cancer death in both men and women.

Front

What are the lungs?

Back

The lungs are the primary organs of the respiratory system where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

Front

What is the role of the trachea?

Back

The trachea, or windpipe, is a tube that connects the throat to the lungs, allowing air to pass through.

Front

What is gas exchange?

Back

Gas exchange is the process by which oxygen is taken into the body and carbon dioxide is expelled, primarily occurring in the alveoli of the lungs.

Front

What is the significance of secondhand smoke?

Back

Secondhand smoke is harmful and can contribute to the development of lung cancer and other respiratory diseases.

Front

What is the respiratory system?

Back

The respiratory system is the network of organs and structures that facilitate breathing and gas exchange, including the lungs, trachea, and diaphragm.

Front

What is the function of bronchi?

Back

Bronchi are the main passageways that branch from the trachea into the lungs, directing air to each lung.

Front

What is the role of oxygen in the body?

Back

Oxygen is essential for cellular respiration, a process that produces energy for the body's cells.