The stock owner's adviser; the breeding, rearing, management, diseases and treatment of domestic animals . revented from entering the lungs,but go onward into the oesophagus; after which the elasticmuscles of the epiglottis in an instant throw it back to its origi-nal position, and the windpipe is open again. The larynx is suc-ceeded by the trachea; running down the neck, it enters thethorax, and terminates at the base of the heart, where it dividesinto the right and left bronchi. It consists of forty or fiftyrings, the ends of which overlap posteriorly, forming a perfectexpansile tube. The en
The stock owner's adviser; the breeding, rearing, management, diseases and treatment of domestic animals . revented from entering the lungs,but go onward into the oesophagus; after which the elasticmuscles of the epiglottis in an instant throw it back to its origi-nal position, and the windpipe is open again. The larynx is suc-ceeded by the trachea; running down the neck, it enters thethorax, and terminates at the base of the heart, where it dividesinto the right and left bronchi. It consists of forty or fiftyrings, the ends of which overlap posteriorly, forming a perfectexpansile tube. The entire trachea is lined by mucous mem-brane. The lungs operate on the same principle as a pair of the cavity of the thorax is enlarged by the contraction ofcertain muscles, the lungs become distended by drawing in the muscles relax, the lungs tend to collapse, expellingmost of their contained air. The blood, through respiration, iscooled and loses watery vapor. It gains oxygen and loses car-bonic acid gas, which the venous circulation has brought backfrom all parts of the system. J. expla:natioe of figuee e. DiaESTiYE Apparatus of the Horse. 1. Mouth. 2. Pharynx. 3. (Esophagus. 4. Diaphragm. 5. Spleen. 6. Stomach (left sac). 7. Duodenum. 8. Liver (upper extremity). 9. Great Caecum. 11. Small intestine. 12. Floating colon. 13. Eectum. 14. Anus. 15. Left kidney and ureter. 16. Bladder. 17. Urethra. A. Hard palate. B. Tongue. C. Soft palate. D. Trachea. E. Pulmonary artery (divided). F. Heart. G. Posterior aorta. (110) STRUCTURE OF THE HOESE. Ill THE DIGESTIVE SYSTEM. The digestive organs comprise the alimentary canal and itsaccessories, extending from the lips to the anus. Its walls arecomposed of muscular tissue, and lined throughout by mucousmembrane. It consists of a continuous series of tubes, each ofwhich will be considered in natural order. The food is pre-pared in the mouth, where it is crushed between the teeth androlled about by the tongue,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectveterin, bookyear1901
