Elements of animal physiology, chiefly human . lvulge Conniventes in itsinterior; also the GaU Bladder and Bile Ducts. fibre around the latter is thickened and so arranged as toform a kind of siohincter muscle, termed the pylorus orpyloric valve. The loalls of the stomach consist of four coats, theinner or mucous coat of which is very complex, beingabundantly supplied with minute follicles, the gastricfollicles or tuhuli. 258. Immediately food is passed into the stomach, itbegins to contract, and roll the food about by its peristalticaction, while simultaneously the gastric juice is pouredout
Elements of animal physiology, chiefly human . lvulge Conniventes in itsinterior; also the GaU Bladder and Bile Ducts. fibre around the latter is thickened and so arranged as toform a kind of siohincter muscle, termed the pylorus orpyloric valve. The loalls of the stomach consist of four coats, theinner or mucous coat of which is very complex, beingabundantly supplied with minute follicles, the gastricfollicles or tuhuli. 258. Immediately food is passed into the stomach, itbegins to contract, and roll the food about by its peristalticaction, while simultaneously the gastric juice is pouredout of the numerous follicles in its walls, and thus be-comes thoroughly mixed with it. These movementswere actually observed by Dr. Beaumont in the stomachof a patient who had suffered from a gun-shot wound. 124 ANIMAL PHYSIOLOG-?. The stomach lies transversely across the upper part ofthe- front of the cavity of the abdomen (see fig. 2), itsleft lying under the ribs and diaphragm, and in contactwith the spleen; its right end underlies the Surface of Mucous Membranaaud Mouths of Gastric FoUiclea. ?Gastric Tubull or Follicles. Dense connective Tissue. Sub-mucous T^sue. -Transverse Muscular Fibre. Longitudinal Muscular FibreFibrous or Serous Coat. Fig. 57. Vertical Section of Coats of Stomach. 259. The Coats of the Stomach.—The stomach isusually described as consisting of four coats— 1. An ouiev fibrous coat, the serous coat. 2. A muscular coat consisting of longitudinal, transverse, andoblique smooth (unstriated) muscular fibre, by wliich the peri-staltic movement is carried on. 3. A submucous coat of loose connective tissue, forming a matrix,in which the blood-vessels and nerves break up and ramify beforereaching the mucous coat. 4. A mucous coat, consisting of a layer of basement membrane,covered by an inner layer of cells. Its surface is coveredwith minute shalloiv pits or alveoli. The bottolns of these shallowpits are studded with the mouths of the gastric
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