. First book on anatomy, physiology, and hygiene : for grammar schools and families . ous mass. This is calledchymification. 157. 3d. In the duodenum, the bile and pancreatic juicechange the chyme into chyle. This is called chylification. 158. 4th. By the action of the lacteal vessels and thoracicduct, the chyle is poured into a vein behind the collar-bone,and passes through the heart to the lungs ; here, by the actionof the air, it becomes Hood. (See Chap. XX.) 159. 5th. The separation and excretion of the residuum. * The chyle is changed by the lacteals and mesenteric glands, butthe nature o
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. First book on anatomy, physiology, and hygiene : for grammar schools and families . ous mass. This is calledchymification. 157. 3d. In the duodenum, the bile and pancreatic juicechange the chyme into chyle. This is called chylification. 158. 4th. By the action of the lacteal vessels and thoracicduct, the chyle is poured into a vein behind the collar-bone, and passes through the heart to the lungs ; here, by the actionof the air, it becomes Hood. (See Chap. XX.) 159. 5th. The separation and excretion of the residuum. * The chyle is changed by the lacteals and mesenteric glands, butthe nature of this change is not, as yet, well defined or understood. 152. What becomes of this pulpy substance ? What change is effectedin the duodenum ? 153. Where do the chyle and residuum then pass ?154. What becomes of the chyle ? Of the residuum ? 155. Recapitulatethe five changes in the digestive process. Note. Let the pupil review the anatomy and physiology of the digestiveorgans, from figs. 36 and 37. or from outline anatomical plate 5. PHYSIOLOGY OF THE DIGESTIVE ORGANS. 55 Fig. 37.. Fig. 37. An ideal view of the organs of digestion, opened nearly the whole length.1 The upper jaw. 2, The lower jaw. 3, The tongue. 4, The roof of the mouth.5, The (Esophagus. 6, The trachea. 7, The parotid gland. 8, The sublingual gland.9, The stomach. 10, 10, The liver. 11, The gall-cyst, or sac. 12, The duct thatconveys the bile to the duodenum, (13, 13.) 14, The pancreas. 15, 15, 15, 15, Thesmall intestine. 16, The opening of the small intestine into the large intestine.17 18, 19 20, The large intestine. 21, The spleen. 22, The upper part of the spinalcolumn. ANATOMY, THYSIOLOGY, AND HYGIENE. CHAPTER XII. HYGIENE OF THE DIGESTIVE ORGANS. 160. The perfection of the digestive process, as well as thehealth of the body, requires the observance of certain condi-tions. These will be considered under four heads. 1st. Thequantity of food that should be taken. 2d. Its quality.3d. The manner in which it sh