A Manual For Students Who Are Preparing For Examination At Apothecaries Hall

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1830 edition. Excerpt: ...the nipple, the ducts unite into twelve or fifteen, of considerable size, which terminate on the surface of the nipple by open mouths. The milk is for the purpose of nourishing the infant. 17. Secretion of saliva. The saliva is secreted by the parotid, submaxillary, and sublingual glands, and conveyed by their ducts into the mouth. Its use seems to be to assist the mastication and deglutition of the food, and its digestion in the stomach. 18. Secretion of gastric juice. The gastric juice, a fluid analogous to saliva, is supposed to be secreted partly by the extreme arteries of the villous coat of the stomach, and partly by the glands. It dissolves those substances which are nutritious to the animal. 19. Secretion of the pancreatic juice. The pancreatic juice is secreted in the acini of the pancreas, and conveyed by numerous small ducts into the great pancreatic duct, which opens along with the biliary duct in the duodenum. It is supposed to assist in chylification, by diluting the acrimony of the bile. 20. Secretion of bile. The bile is secreted in the liver by the minute branches of the vena portae into the acini, or penicilli; from thence it passes through the excretory ducts, called the pori biliarii, into the hepatic duct; this joining with the cystic duct, forms the ductus communis choledochus, which terminates in the duodenum. It is said by some that the blood of the vena portae, having more carbon and hydrogen than that of the hepatic artery, is more proper for furnishing the elements of the bile. 21. Excretion of bile. When digestion is not going on, the opening of the ductus choledochus is closed by the contraction of the duodenum; and the bile not therefore finding access into it, regurgitates into the gall-bladder, where it...