Identifier: anatomydescripti1897gray (find matches)
Title: Anatomy, descriptive and surgical
Year: 1897 (1890s)
Authors: Gray, Henry, 1825-1861 Carter, H. V. (Henry Vandyke), 1831-1897 Pick, T. Pickering (Thomas Pickering), 1841-1919
Subjects: Anatomy Human anatomy Anatomy, Surgical and topographical
Publisher: London : Longmans, Green
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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st in the interior. The lyulmonary artery conveys the venous blood to the lungs ; it divides intobranches which accompany the bronchial tubes, and terminates in a densecapillary network, upon the walls of the intercellular passages and air-cells. Inthe lung, the branches of the XDulmonary artery are usually above and in front ofa bronchial tube, the vein below. The pulmonary capillaries form plexuses which lie immediately beneath themucous membrane, in the walls and septa of the air-cells, and of the infundibula.In the septa between the air-cells the capillary network forms a single layer.The capillaries form a very minute network, the meshes of which are smaUerthan the vessels themselves ; * their walls are also exceedingly thin. The arteries * The meshes are only 0-002 to oooS in width, while the vessels are 0-003 to0-005. Kolliker, Human Microscopic Anatomy. THE LUNGS 1053 Fig. 648.—The roots of the lungs and posterior pulmonary plexus, seen from behind. PECU^PENT LARYNOCAL NERVE
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I054 OEGANS OF VOICE AND EESPIEATION of neighbouring lobules are independent of each other, but the veins freelyanastomose together. The p2ilmonary veins commence in the pulmonary capillaries, the radiclescoalescing into larger branches, which accompany the arteries and return theoxygenated blood to the left auricle of the heart. The bronchial arteries supply blood for the nutrition of the lung: they arederived from the thoracic aorta, and, accompanying the bronchial tubes, aredistribiited to the bronchial glands, and upon the walls of the larger bronchialtubes and pulmonary vessels. Those supplying the bronchial tubes form acapillary plexus in the muscular coat, from which branches are given off to forma second plexus in the mucous coat. This plexus communicates with branchesof the pulmonary artery, and empties itself into the pulmonary vein. Othersare distributed in the interlobular areolar tissue, and terminate partly in the deep,partly in the superficial, bronchial veins. Lastly,

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