. Manual of cattle-feeding. A treatise on the laws of animal nutrition and the chemistry of feeding stuffs in their application to the feeding of animals. With illustrations and an appendix of useful tables. Feeds; Cattle; Nutrition. MANUAL OB"^ CATTLE-JB^EEDING. 81 ruslies into tlie lungs by virtue of the atmospheric pres- sure. This constitutes the movement of inspiration^ or breathing in. The reverse motion, which immediately follows and expels a portion of the air, constitutes the movement of eo&pircdion^ or breathing out. The air enters the lungs through the trachea, or wind- pip
. Manual of cattle-feeding. A treatise on the laws of animal nutrition and the chemistry of feeding stuffs in their application to the feeding of animals. With illustrations and an appendix of useful tables. Feeds; Cattle; Nutrition. MANUAL OB"^ CATTLE-JB^EEDING. 81 ruslies into tlie lungs by virtue of the atmospheric pres- sure. This constitutes the movement of inspiration^ or breathing in. The reverse motion, which immediately follows and expels a portion of the air, constitutes the movement of eo&pircdion^ or breathing out. The air enters the lungs through the trachea, or wind- pipe, from the mouth and nostrils. The tracliea, after reaching the chest, divides into two branches, one leading to the right and the other to the left lung, and each branch subdivides again and again into a midtitude of fine tubes, called bronchial tubes, each of which finally ends in an vZtir mAjbte lobule^ consisting of sev- eral mhiute "Desloles, In Tig. 0, c represents the ultimate bronchial tube, !> i the vesicles, and the whole mass of vesicles constitutes an ultimate lobule, a. The vesicles and tubes have elastic walls and are siu'rounded by an elastic tissue, so that the whole lung constitutes a spongy mass which expands or con- tracts with the motions of the chest, causing the air to flow into and out of all parts of it. The vesicles are also surrounded by a net-work of ex- tremely fine capillary blood-vessels, through which the blood sent to the lungs by the contraction of the right ventricle of the heart must pass, and the walls both of the capillaries and of the vesicles are very thin and are permeable to gases. Exchange of G-ases in the Lungs.—^The venous blood, as it comes to the limgs, is rich in carbonic acid,. Pig. 6.—(Prey ) Lung Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
Size: 1396px × 1790px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectnutrition, bookyear18
