Front

What is the diaphragm?

Back

The diaphragm is a large muscle that contracts and relaxes to move air in and out of the lungs.

Front

What is the larynx?

Back

The larynx, also known as the voice box, is the passageway for air from the pharynx to the trachea and contains the vocal cords.

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What role does the diaphragm play in breathing?

Back

The diaphragm contracts to create a vacuum that pulls air into the lungs, facilitating inhalation.

Front

What is deoxygenated blood?

Back

Deoxygenated blood is blood that has a low level of oxygen and a high level of carbon dioxide.

Front

What is the function of the trachea?

Back

The trachea is the windpipe that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

What are intercostal muscles?

Back

Intercostal muscles are the muscles located between the ribs that assist in the expansion and contraction of the chest during breathing.

Front

What is the role of the nasal cavity in respiration?

Back

The nasal cavity filters, warms, and moistens the air we breathe before it enters the lungs.

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 gas exchange?

Back

Gas exchange is the process by which oxygen is absorbed into the blood and carbon dioxide is removed from the blood in the alveoli.