. Physiology and animal mechanism : first-book of natural history, prepared for the use of schools and colleges. ay in which the blood, in completing the entire route of the circu-lation, passes twice through the heart, and also passes through thetwo systems of capillary vessels, namely, those of the lungs in getting fromthe pulmonary artery into the pulmonary veins, and those of all the organs,in passing from the minute terminating branches of the aorta into theradicals of the veins which end in the vena? cavse. The two halves of theheart, which in reality are only separated by a partition, a
. Physiology and animal mechanism : first-book of natural history, prepared for the use of schools and colleges. ay in which the blood, in completing the entire route of the circu-lation, passes twice through the heart, and also passes through thetwo systems of capillary vessels, namely, those of the lungs in getting fromthe pulmonary artery into the pulmonary veins, and those of all the organs,in passing from the minute terminating branches of the aorta into theradicals of the veins which end in the vena? cavse. The two halves of theheart, which in reality are only separated by a partition, are here completelyisolated.—g. left side of the heart—a. the aorta—c. a. p. capillary vesselswhich terminate the arteries, all of which spring from the aorta—v. generalvenous system—a\ right side of the heart—a. p. pulmonary artery—v. vein.—The arrows point in the direction of the current. Fig. 3. A large vein opened to show the valves (v.) which are found inthese vessels—o. opening of one of the branches—an. anastomosis of twoveins,—c. capillary roots of the vein. Plate Organs of Digestion. EXPLANATION OF PLATE 3. Fig. 1. A vertical section of the head and neck, to show how the wind-pipe or trachea opens into the swallow or pharynx, and how this last cavitycommunicates with the mouth and nasal fossae or nostrils.—b. the mouth,—I. the tongue.—vp. arch of the palate which separates the mouth from thenasal fossae.—n. nasal fossae opening externally by the nostrils and commu-nicating with the swallow by the posterior nares or hind nostrils (an.)— of the fauces—am. tonsils. — v. vail of the palate.—ph. the swallowor pharynx cleft or divided like the mouth and nasal fossae.—, atube which descends from the swallow to the stomach.—la. larynx, thesuperior opening of which called the glottis, gl. is placed at the anterior andinferior part of the swallow: wc see upon this organ a species of littletongue or v
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Keywords: ., bookauthorruschenbergerwswwilli, bookcentury1800, bookdecade1840
