Breathing and Gas Exchange

Front

What is the primary function of the respiratory system?

Back

The primary function of the respiratory system is to provide oxygen to the body and remove carbon dioxide.

Front

What is the trachea?

Back

The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

What is the role of alveoli in gas exchange?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs; they allow oxygen to enter the blood and carbon dioxide to be removed.

Front

What is the process of breathing?

Back

Breathing is the mechanical movement of air into (inhalation) and out of (exhalation) the lungs.

Front

What gas enters the bloodstream from the alveoli during gas exchange?

Back

Oxygen (O2) enters the bloodstream from the alveoli during gas exchange.

Front

What is the function of the diaphragm in respiration?

Back

The diaphragm is a muscle that contracts and relaxes to facilitate breathing; it helps to expand and compress the thoracic cavity.

Front

What is the difference between inhalation and exhalation?

Back

Inhalation is the process of taking air into the lungs, while exhalation is the process of expelling air from the lungs.

Front

What is the significance of the bronchi in the respiratory system?

Back

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

Front

What is the role of capillaries in gas exchange?

Back

Capillaries are tiny blood vessels that surround the alveoli and facilitate the exchange of oxygen and carbon dioxide between the blood and the lungs.

Front

What is the term for the exchange of gases between the lungs and the blood?

Back

The term for the exchange of gases between the lungs and the blood is called external respiration.