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A music wind instrument consisting of a leathern bag, which receives air from the mouth or from the bellows, and of pipes, into which the air is pressed from the bag by the performer's elbow.

Bagpipe

A music wind instrument consisting of a leathern bag, which receives air from the mouth or from the…

"Coiling of the windpipe in the sternum of Grus canadensis. Sandhill Crane." Elliot Coues, 1884

Sandhill Crane Windpipe

"Coiling of the windpipe in the sternum of Grus canadensis. Sandhill Crane." Elliot Coues, 1884

The passage to the esophagus and windpipe. Labels: c, the tongue; d, the soft palate ending in g, the uvula; h, the epiglottis; i, the glottis; I, the esophagus; f, the pharynx.

Passage to the Esophagus and Windpipe

The passage to the esophagus and windpipe. Labels: c, the tongue; d, the soft palate ending in g, the…

The relationship of the esophagus, trachea and aorta in an infant.

Esophagus, Trachea, and Aorta in an Infant

The relationship of the esophagus, trachea and aorta in an infant.

The larynx viewed from its pharyngeal opening. The back wall of the pharynx has been divided and its edges (11) turned aside. Labels: 1, body of hyoid; 2, its small, and 3, its great, horns; 4, upper and lower horns of thyroid cartilage; 5, mucous membrane of front of pharynx, covering the back of the cricoid cartilage; 6, upper end of gullet; 7, windpipe, lying in front of the gullet; 8, eminence caused by cartilage of Santorini; 9, eminence caused by cartilage of Wrisberg -- both lie in, 10, the aryteno-epiglottidean fold of mucous membrane, surrounding the opening (aditus laryngis) from pharynx to larynx; a, projecting tip of epiglottis; c, the glottis -- the lines leading from the letter point to the free vibrating edges of the vocal cords; b' the ventricles of the larynx -- their upper edges, marking them off from the eminences b, are the false vocal cords.

Larynx

The larynx viewed from its pharyngeal opening. The back wall of the pharynx has been divided and its…

"Cartilages and Ligaments of the Larynx. (Front view.) <em>A</em>, epiglottis; <em>B</em>, thyroid cartilage; <em>C</em>, ladle-shaped cartilage; <em>E</em>, cricoid cartilage; <em>F</em>, upper ring of the windpipe." &mdash; Blaisedell, 1904

Posterior view of the larynx

"Cartilages and Ligaments of the Larynx. (Front view.) A, epiglottis; B, thyroid cartilage;…

The lungs and windpipe (trachea). Labels: 1, larynx; 2, windpipe (trachea); 3, right lung, showing bronchi and bronchial tube.

Lungs and Trachea

The lungs and windpipe (trachea). Labels: 1, larynx; 2, windpipe (trachea); 3, right lung, showing bronchi…

Diagram showing the structure of the lungs. At <em>d</em> is the left lung, and at <em>c</em> are represented the main branch of the windpipe that go to the right lung, separated by the lung itself. At the lower part, at <em>e</em>, are represented the very minute branches as they go to the air-cells (alveoli). At <em>b</em> is the windpipe (trachea), and at <em>a</em> is the larynx (or Adam's apple). It is through a chink in this that air passes in and out as we breathe.

Structure of the Lungs

Diagram showing the structure of the lungs. At d is the left lung, and at c are represented…

"The respiratory mechanism consists of the lungs, a series of minute air chambers with a network of capillaries in the wall, the air passages from the air chambers of the lngs to the outer air, and the chest walls with their muscles, which act like bellows and change the ai r in the lungs. Let us begin with the air passages. There are first the nose and mouth; these join the upper part of the gullet, known as the pharynx. From the pharnyx arises the windpipe (trachea); this passes through the voice box (larynx) into the chest cavity; there it divides into two passages (the bronchi); the bronchi go on dividing again and again, generally into two; the ultimate divisions (the bronchioles) open into clusters of air chambers."&mdash;(Charles Leonard-Stuart, 1911)

Respiratory Mechanism

"The respiratory mechanism consists of the lungs, a series of minute air chambers with a network of…

The respiratory system. Labels: 1, larynx; 2, trachea; 3, right lung; 4, left lung; 5, heart.

Respiratory System

The respiratory system. Labels: 1, larynx; 2, trachea; 3, right lung; 4, left lung; 5, heart.

Transverse section of trachea and esophagus of child, seen from below.

Transverse Section of Trachea and Esophagus

Transverse section of trachea and esophagus of child, seen from below.

Transverse section of trachea, showing general arrangement of its wall.

Transverse Section of Trachea Showing Arrangement of Walls

Transverse section of trachea, showing general arrangement of its wall.

Section of the trachea. Labels: a, columnar ciliated epithelium; b and c, proper structure of the mucous membrane, containing elastic fibers cut across transversely; d, submucous tissue containing mucous glands, e, separated from the hyaline cartilage, g, by a fine fibrous tissue, f; h, external investment of fine fibrous tissue.

Section of the Trachea

Section of the trachea. Labels: a, columnar ciliated epithelium; b and c, proper structure of the mucous…

Transverse section of the trachea, just above its bifurcation, showing the carina tracheae.

Transverse Section of the Trachea

Transverse section of the trachea, just above its bifurcation, showing the carina tracheae.

"1, 2, left, two tracheal rings, separate. b; 1, 2, right hand, the same put together." Elliot Coues, 1884

The Tracheal Rings of a Bird

"1, 2, left, two tracheal rings, separate. b; 1, 2, right hand, the same put together." Elliot Coues,…