. Human physiology. -vesicles and the pulmonary veins in man, which allowsa more ready imbibition and transudation; but what thatarrangement is admits of ques-tion. Each lung is covered by thepleura^ — a serous membraneanalogous to the peritoneum,—and, in birds, a prolongation ofthe latter. This membrane isreflected from the adjacent sur-face of the lung to the pericar-dium which covers the heart,and is then spread over the in-terior paries of tlie half of thethorax to which it belongs;lining the ribs and intercostalmuscles, and covering the con-vex or upper surface of thediaphragm. There are,
. Human physiology. -vesicles and the pulmonary veins in man, which allowsa more ready imbibition and transudation; but what thatarrangement is admits of ques-tion. Each lung is covered by thepleura^ — a serous membraneanalogous to the peritoneum,—and, in birds, a prolongation ofthe latter. This membrane isreflected from the adjacent sur-face of the lung to the pericar-dium which covers the heart,and is then spread over the in-terior paries of tlie half of thethorax to which it belongs;lining the ribs and intercostalmuscles, and covering the con-vex or upper surface of thediaphragm. There are, conse-quently, two pleura3, each ofwhich is confined to its ownhalf of the thorax, lining itscavity and covering the the sternum, however,they are contiguous to eachother, and form the partitioncalled mediastintim, which ex-tends between the sternum andspine. Fig. 87 exhibits theboundaries of the two cavitiesof the pleura. The middlespace between is the mediasti-num. Within this septum, the Fig. Outline of a Transverse Section of the Chest, show-ing the relative position of the Pleurse to theThorax and its Contents. 1. Skin on the front of the chest drawn up by a Skin on the sides of the chest. 3. Tliat on the Subcutaneous fat and muscles on tlie outside of thethorax. 5. Section of the muscles in the vertebralglitter, fi. Section of fifth dorsal vertebra. 7. Spinalcanal. 8. Spinous process. 9, 9, 10, 10. Sections ofribs and intercostal muscles. 11. Their cartilages. 13. Division of the pulmonary artery. surface of lungs. 1.). Posterior face of Anterior face of lungs. 17. Inner face of lungs. face of heart covered by pericardium. 19. Pul-monary artery. 20, 21. Its division into right and leftbranches. 22. Portion of right auricle. Descendingcava cut off at right auricle. 24. Section of left bron-chus. 2.). Section of right bronchus. 26. Section ofccsophagus. 27. Section of thoracic aorta. T
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Keywords: ., bookauthordungliso, bookcentury1800, bookdecade1850, bookyear1856
