ClipArt ETC
"The principal muscles are seen on the left, and superficial veins on the right." — Blaisedell, 1904

Principal Organs of the Thorax and Abdomen

"The principal muscles are seen on the left, and superficial veins on the right." — Blaisedell, 1904

Muscles of the thorax and front of the arm.

Muscles of the Arm and Thorax

Muscles of the thorax and front of the arm.

Muscles of the thorax and front of the arm, showing some of the boundaries of the axilla.

Muscles of the Arm and Thorax

Muscles of the thorax and front of the arm, showing some of the boundaries of the axilla.

The left figure represents the natural shape of the chest, and that upon the right, the contracted state of it, owing to tight lacing.

Natural and Contracted Chest

The left figure represents the natural shape of the chest, and that upon the right, the contracted state…

A deformed thorax and spinal column.

Deformed Thorax

A deformed thorax and spinal column.

View of the diaphragm; 1, cavity of the thorax; 2, diaphragm separating the cavity of the thorax from that of the abdomen; 3, cavity of the pelvis.

Diaphragm

View of the diaphragm; 1, cavity of the thorax; 2, diaphragm separating the cavity of the thorax from…

Diaphragm in the state of its greatest ascent in expiration; 2, muscles of the abdomen in action forcing the viscera and diaphragm upwards.

Diaphragm During Expiration

Diaphragm in the state of its greatest ascent in expiration; 2, muscles of the abdomen in action forcing…

Diaphragm in its state of greatest descent in inspiration; 2, muscles of the abdomen, showing the extend of their protrusion in the action of inspiration.

Diaphragm During Inspiration

Diaphragm in its state of greatest descent in inspiration; 2, muscles of the abdomen, showing the extend…

External features of a grasshopper mesothorax.

Grasshopper

External features of a grasshopper mesothorax.

External features of a grasshopper prothorax.

Grasshopper

External features of a grasshopper prothorax.

"A, the head; B, C, D, segments of the thorax; E, abdomen; F, ovipositor." -Cooper, 1887

Parts of an Insect

"A, the head; B, C, D, segments of the thorax; E, abdomen; F, ovipositor." -Cooper, 1887

"Anatomy of the external skeleton of an insect" — Goodrich, 1859

External Anatomy of an Insect Skeleton

"Anatomy of the external skeleton of an insect" — Goodrich, 1859

A large moth named for the skull-like image upon its thorax.

Death's Head Moth

A large moth named for the skull-like image upon its thorax.

Left pleural sac in a subject hardened by formalin injection, opened into by the removal of the costal part of the parietal pleura. The lung has also been removed so as to display the mediastinal pleura.

Pleural Sac

Left pleural sac in a subject hardened by formalin injection, opened into by the removal of the costal…

The trunk showing ribs.

Ribs

The trunk showing ribs.

Vertebral ends of tenth, eleventh, and twelfth ribs of right side from below.

Ribs, Ends of

Vertebral ends of tenth, eleventh, and twelfth ribs of right side from below.

"Drawing from tlife of the Italian scorpion Euscorpius italicus, Herbst, holding a blue-bottle fly with its left chela, and carefully piercing it between head and thorax with its string. Two insertions of the string are effected and the fly is instantly paralysed by the poison so introduced into its body." — The Encyclopedia Britannica, 1910

Scorpion

"Drawing from tlife of the Italian scorpion Euscorpius italicus, Herbst, holding a blue-bottle fly with…

An ancient Greek soldier.

Greek soldier

An ancient Greek soldier.

The armor worn by ancient Roman emperors and generals.

Roman soldier

The armor worn by ancient Roman emperors and generals.

Deep structures of the right thoracic cavity, after removal of the right lung.

Thoracic Cavity after Removal of Lung

Deep structures of the right thoracic cavity, after removal of the right lung.

The human thoracic viscera.

Thoracic Viscera

The human thoracic viscera.

The muscles of the thoracic wall.

Muscles of the Thoracic Wall

The muscles of the thoracic wall.

"The <em>ribs</em> are long, flat, and curved bones which bend round the chest somewhat like the hoops of a barrel. There are twenty-four ribs, twelve on each side." &mdash; Blaisedell, 1904

Thorax

"The ribs are long, flat, and curved bones which bend round the chest somewhat like the hoops…

"The transverse section of the thorax. 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis sterni; 4, 5, phrenic nerves; 6, thoracic duct; 7, esophagus; 8, vena azygos major; 9, thoracic aorta; 19, sympathetic; R. V., right ventricle; R. A., right auricle; P.A., pulmonary artery; A., aorta; C., superior vena cava; V., dorsal vertebra." &mdash; Richardson, 1906

Thorax

"The transverse section of the thorax. 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis…

"Cross-section of thorax. A, bronchus, entering the lung; B, the aorta cut at its origin and again at the descending part of its arch; C, the pericardial space; D, the pleural cavity; E, the alimentary canal; PA, the pulmonary artery; X, the neural canal." &mdash;Martin, 1917

Thorax

"Cross-section of thorax. A, bronchus, entering the lung; B, the aorta cut at its origin and again at…

The skeleton of the thorax. Labels: a, g, vertebral column; b, first rib; c, clavicle; d, third rib; i, glenoid fossa.

Thorax

The skeleton of the thorax. Labels: a, g, vertebral column; b, first rib; c, clavicle; d, third rib;…

The thorax, including the ribs, sternum, and spine.

The Thorax

The thorax, including the ribs, sternum, and spine.

Thorax, or chest; a, the sternum; b,b, the spine; c,c, the ribs.

Thorax

Thorax, or chest; a, the sternum; b,b, the spine; c,c, the ribs.

The thorax consists of the dorsal vertebrae, the ribs, and the sternum.

Bony Walls of the Thorax

The thorax consists of the dorsal vertebrae, the ribs, and the sternum.

The thorax. Labels: a, the sternum. b to c, the true ribs; d to h, the false ribs; g, h, the floating ribs; i, k, dorsal vertebrae.

The Thorax

The thorax. Labels: a, the sternum. b to c, the true ribs; d to h, the false ribs; g, h, the floating…

Thorax. The thorax, or chest, is an elongated conical-shaped cage, formed by the sternum and costal cartilages in front, the 12 ribs on each side, and the bodies of the 12 dorsal vertebrae behind. It contains and protects the principal organs of respiration and circulation. Labels: 1 to 12, ribs; d, d, costal cartilages; e, upper end of sternum; b, middle portion of sternum; 1 a, first dorsal vertebra; 12 a, twelfth dorsal vertebra; 7 a, seventh cervical vertebra; 1 to 7, true ribs; 8 to 12, false ribs; 11, 12, floating ribs. 10th rib is defective; it should be attached to the costal cartilage.

Human Thorax (Chest)

Thorax. The thorax, or chest, is an elongated conical-shaped cage, formed by the sternum and costal…

"Thorax and abdomen. 1, 1, 1, 1. Muscles of the chest. 2, 2, 2, 2. Ribs. 3, 3, 3. Upper, middle and lower lobes of the right lung. 4, 4. Lobes of the left lung. 5, Right ventricle of the heart. 6. Left ventricle. 7. Right auricle. 8. Left auricle. 9. Pulmonary artery. 10. Aorta. 11. Descending vena cava. 12. Trachea. 13. Oesophagus. 14, 14, 14, 14. Pleura. 15, 15. Diaphragm. 16, 16. Right and left lobes of the liver. 17. Gall cyst. 18. Stomach. 19. Duodenum. 20. Ascending colon. 21. Transverse colon. 22. Descending colon. 23, 23. Small intestine. 24. Thoracic duct opening into the left subclavian vein. 25. Spleen." -Foster, 1921

Thorax and Abdomen

"Thorax and abdomen. 1, 1, 1, 1. Muscles of the chest. 2, 2, 2, 2. Ribs. 3, 3, 3. Upper, middle and…

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.…

Showing the changes in the thorax which follow scoliosis of the spine. The convexity of the spinal curvature is towards the right; on the side the ribs are sharply bent at their angles. On the concave (left) side their ribs have an open angle.

Changes in the Thorax following Scoliosis of the Spine

Showing the changes in the thorax which follow scoliosis of the spine. The convexity of the spinal curvature…

The skeleton of the thorax. Labels: a, g, vertebral column; b, first rib; c, clavicle; e, seventh rib; i, glenoid fossa.

Thorax Skeleton

The skeleton of the thorax. Labels: a, g, vertebral column; b, first rib; c, clavicle; e, seventh rib;…

Section of the wall of the thorax, showing the phrenicocostal sinus.

Section of the Thorax Wall

Section of the wall of the thorax, showing the phrenicocostal sinus.

The bony thorax, anterior view.

Anterior View of Bony Thorax

The bony thorax, anterior view.

Front view of the bones of the thorax, including the ribs, sternum and vertebrae. Labels: 1, first bone of the sternum; 2, second bone of the sternum; 3, third bone or ensiform cartilage; 4, first dorsal vertebra; 5, last or twelfth dorsal vertebra; 6, first rib; 7, its head; 8, its neck; 9, its tubercle; 10, seventh or last true rib; 11, its cartilage; 12, angle of eleventh rib; 13, its body.

The Bones of the Thorax

Front view of the bones of the thorax, including the ribs, sternum and vertebrae. Labels: 1, first bone…

Topography of the retrocardiac structures of the mediastinum, after the removal of the heart and pericardium.

Dissection of the Thorax

Topography of the retrocardiac structures of the mediastinum, after the removal of the heart and pericardium.

The thorax. Dorsal view.

Dorsal View of Thorax

The thorax. Dorsal view.

The thorax as seen from in front.

Front View of Thorax

The thorax as seen from in front.

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.

The bony thorax, lateral view.

Lateral View of Bony Thorax

The bony thorax, lateral view.

The lower half of the thorax, with four lumbar vertebrae showing the diaphragm from above. Labels: 1,2,3, central tendon; 4,5, muscular part.

Lower Half of the Thorax

The lower half of the thorax, with four lumbar vertebrae showing the diaphragm from above. Labels: 1,2,3,…

Orthodiagram of the thorax. The position of parts is shown in extreme inspiration; the position of the diaphragm and liver in expiration is also shown.

Orthodiagram of the Thorax

Orthodiagram of the thorax. The position of parts is shown in extreme inspiration; the position of the…

The thorax as seen from right side.

Side View of Thorax

The thorax as seen from right side.

The skeleton of the thorax, front view.

Skeleton of the Thorax

The skeleton of the thorax, front view.

Diagram of a transverse section of the thorax. Labels: 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis sterni muscle; 4, right phrenic nerve between pleura and pericardium; 5, left phrenic nerve between the pleura and pericardium; 6, thoracic duct in posterior mediastrinum; 7, esophagus with left vagus in front and right vagus behind; 8, vena azygos major; 9, thoracic aorta giving off intercostal arteries; 10, gangliated cord of sympathetic; R.V., right ventricle; R.A., right auricle of heart in middle mediastinum; P.A., pulmonary artery; A., aorta; C., vena cava superior; V. dorsal vertebra.

The Thorax

Diagram of a transverse section of the thorax. Labels: 1, anterior mediastinum; 2, internal mammary…

Transverse section of the thorax. Labels: 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis sterni; 4, 5, phrenic nerves; 6, thoracic duct; 7, esophagus; 8, vena azygos major; 9, thoracic aorta; 10, sympathetic; R. V., right ventricle; R. A., right auricle; P. A. pulmonary artery; A., aorta; C., superior vena cava; V., dorsal vertebra.

Transverse Section of the Thorax

Transverse section of the thorax. Labels: 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis…

The thorax. Ventral view.

Ventral View of Thorax

The thorax. Ventral view.

Sagittal section through the trunk, 6 cm to the right of the median plane, viewed from the right. Note the close proximity of the duodenum and colon to the right kidney.

Side View of the Trunk

Sagittal section through the trunk, 6 cm to the right of the median plane, viewed from the right. Note…