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Lateral, sagittal section through the left thorax and upper portion of abdomen, viewed from the left. The plane of the section lies 4 cm to the left of the median plane.

Side View of the Thorax and Part of the Abdomen

Lateral, sagittal section through the left thorax and upper portion of abdomen, viewed from the left.…

Frontal section through the thorax, passing through the mediastinum and the middle of the humeral heads.

Frontal Section Through the Thorax

Frontal section through the thorax, passing through the mediastinum and the middle of the humeral heads.

"Larynx, Trachea, and the Bronchi. (Front view.) <em>A</em>, epiglottis; <em>B</em>, thyroid cartilage; <em>C</em>, cricothyroid membrane, connecting with the cricoid cartilage below, all forming the larynx; <em>D</em>, rings of the trachea." &mdash; Blaisedell, 1904

Trachea

"Larynx, Trachea, and the Bronchi. (Front view.) A, epiglottis; B, thyroid cartilage;…

"The <em>trachea</em> has in its walls stiff rings of cartilage that hold it open so that the air can pass freely through it to and from the lungs. At its base the trachea divides and sends a great branch to each lung." &mdash; Ritchie, 1918

Trachea and lungs

"The trachea has in its walls stiff rings of cartilage that hold it open so that the air can…

Section immediately above the manubrium sterni.

Cross Section of the Trunk above the Manubrium Sterni

Section immediately above the manubrium sterni.

Section at the level of the junction of the manubrium and corpus sterni, exposing the great vessels at the base of the heart.

Cross Section of the Trunk at the Level of Junction of the Manubrium

Section at the level of the junction of the manubrium and corpus sterni, exposing the great vessels…

Section through the aortic valves.

Cross Section of the Trunk Through the Aortic Valve

Section through the aortic valves.

Section through the humeral heads and the apices of the lungs.

Cross Section of the Trunk Through the Lungs

Section through the humeral heads and the apices of the lungs.

Section through middle of manubrium sterni.

Cross Section of the Trunk Through the Manubrium Sterni

Section through middle of manubrium sterni.

"A small bronchial tube and the air sacs in which it ends." &mdash; Ritchie, 1918

Bronchial tube

"A small bronchial tube and the air sacs in which it ends." — Ritchie, 1918