. Human physiology. rceptible. Its termination, also, has given rise to Epist. de Pulmon., i. 133. 2 Ueber den Bau der Lungen, u. s. w., Berlin, 1822 ; also, in Latin, Berl., 1822. 3 Memoires de IAcadem. pour 1718, p. 18. * Precis, &c., ii. 309. ^ The Microscopic Anatomy of tlie Human Body in Health and Disease, part xii. , London, 1848. A shaded Diagram, representing the Heart nnd GroatVessels, injected and in connexion with the Luugsjthe Pericardium is removed. 1. Right auricle. 2. Vena cava superior. 3. Vena cavainferior. 4. Kigiit ventricle. 5. Pulmonary artery, divid-ing into two bra
. Human physiology. rceptible. Its termination, also, has given rise to Epist. de Pulmon., i. 133. 2 Ueber den Bau der Lungen, u. s. w., Berlin, 1822 ; also, in Latin, Berl., 1822. 3 Memoires de IAcadem. pour 1718, p. 18. * Precis, &c., ii. 309. ^ The Microscopic Anatomy of tlie Human Body in Health and Disease, part xii. , London, 1848. A shaded Diagram, representing the Heart nnd GroatVessels, injected and in connexion with the Luugsjthe Pericardium is removed. 1. Right auricle. 2. Vena cava superior. 3. Vena cavainferior. 4. Kigiit ventricle. 5. Pulmonary artery, divid-ing into two branches n, a, one for the right, the other for theleft lung. 6. Point of the left auricle. 7. Part of left ventri-cle. 8. Aorta. 9, 10. Two lobes of the left lung. 11,12, lobes of the right lung, a, a. Right and left pulmo-nary arteries. 6, h. Right and left bronchi, v, v. Right andleft pulmonary veins. The relative position of these threevessels is seen to ditfer on tlie two sides. RESPIRATORY ORGANS. 273. Arrangement of the Capillaries of the Air-cellsof the Human Lung. conjecture. Malpiglii conceived it to end at the mucous surface of thebronchi in an extremely delicate network, which he called rete onirabile;and this was, likewise, the opinion of Reisseisen. Bichat^ admitted atthe extremities of the pulmonaryartery, and between that arteryand the veins of the same name,vessels of a more delicate charac-ter, which he conceived to be theagents of hgematosis, and calledthe capillary system of the , however, is nothing morethan the fine dense capillary net-work, formed by the distributionof the artery on the air-cells, fromwhich the pidmonaj-y veins radicles communicate freelywith those of the pulmonary ar-tery. When we observe them dis-tinctly, they are found uniting toconstitute larger and larger veins,until they ultimately end in four great trunks, which open into theleft auricle of the heart. The pulmonary arteries do not anastomosein their cours
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