The act of respiring; inhalation and exhalation of air

• respiration
• ventilation
• mediastinum

The tube or cavity, with its surrounding membrane and muscles, that connects the mouth and nasal passages with the esophagus.

• pleura
• pharynx
• lung

Respiratory organs in the thorax of humans and the higher vertebrates.

• lung
• bronchus
• larynx

A muscular and cartilaginous structure lined with mucous membrane at the upper part of the trachea in humans, in which the vocal cords are located.

• larynx
• pharynx
• alveolus

a median septum or partition between two parts of an organ, or paired cavities of the body.

• mediastinum
• diaphram
• alveolus

A delicate serous membrane investing each lung in mammals and folded back as a lining of the corresponding side of the thorax.

• pleura
• alveolus
• bronchiole

A small branch of a bronchus.

• bronchiole
• bronchus
• pharynx

A muscular, membranous or ligamentous wall separating two cavities or limiting a cavity.

• diaphragm
• mediastinum
• lung

an air cell of the lungs, formed by the terminal dilation of tiny air passageways.

• alveolus
• bronchus
• pleura

The organs of respiration are...

• larynx, spleen,lungs
• pharynx, heart, liver
• larynx, pharynx, bronchi