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Smallest blood vessels where gas exchange occurs with the alveoli.

The main passageways directly attached to the lungs.

A double-layered membrane surrounding each lung.

A condition in which the pH of blood is below 7.35 due to excessive retention of carbon dioxide resulting from impaired lung function.

Areas of the airways that are not involved in gas exchange, such as the trachea and bronchi.

The process of moving air into and out of the lungs, commonly known as breathing.

Houses the vocal cords, and is involved in breathing, sound production, and protecting the trachea against food aspiration.

The volume of air remaining in the lungs after a maximal exhalation.

The additional air that can be forcibly exhaled after normal exhalation.

The additional air that can be forcibly inhaled after the inspiration of a normal tidal volume.

The presence of an abnormally high level of carbon dioxide in the circulating blood.

A flap of tissue that prevents food from entering the trachea during swallowing.

A condition in which the body or a region of the body is deprived of adequate oxygen supply.

A large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes.

The amount of air which enters the lungs during normal inhalation at rest.

An instrument used to measure the volume of air inhaled and exhaled by the lungs.

Tiny air sacs in the lungs where exchange of oxygen and carbon dioxide takes place.

A muscular tube that serves as a pathway for air and food, commonly known as the throat.

The total amount of air that can be exhaled after maximum inhalation, used to assess strength of respiratory muscles.