. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. 336 PHYSIOLOGY OF THE DOMESTIC ANIMALS. has been noticed to take place in the horse. Under such circumstances it is a symptom of the greatest gravity, and in most cases it will be found to be due to the partial rupture of the walls of the oesophagus. Ruminants, also, habitually do not vomit, but do so occasionally. When the structure of the stomach of the ruminant animal is examined, all the conditions would at first appear to favor vomiting. The gullet is large, dilatable, and has a funnel-shaped opening
. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. 336 PHYSIOLOGY OF THE DOMESTIC ANIMALS. has been noticed to take place in the horse. Under such circumstances it is a symptom of the greatest gravity, and in most cases it will be found to be due to the partial rupture of the walls of the oesophagus. Ruminants, also, habitually do not vomit, but do so occasionally. When the structure of the stomach of the ruminant animal is examined, all the conditions would at first appear to favor vomiting. The gullet is large, dilatable, and has a funnel-shaped opening into the stomach; the stomach is large, is in direct contact with the abdominal walls and the diaphragm, and the pylorus is far removed from the cardiac orifice. Nevertheless, vomiting, even when intense nausea is produced by emetics, Erv. Srii. Fig. 144.—Anterior Haw of the Stomach of the Horse, Inflated, Seen from Behind. (Mutter.) Sch, oesophagus; G, cardiac cul-de-sac; kC, lesser curvature: gC, greater curvature; 1A, mucous membrane of the left half, and rA. mucous membrane of the right half of the stomach : R, dividing line between right and left halves of the stomach; F, fold projecting into stomach from the lesser curvature; L, peptic region ; Schl, mucous region; gMs, muscular pillars surrounding the opening of the oesophagus ; d, section of the muscular fold ; F, pylorus ; PH. pyloric cavity ; E, constriction separating pyloric por- tion from right half of stomach ; Z, duodenum; Erw, pear-shaped dilatation of duodenum ; M, opening of the bile and pancreatic ducts. will but rarely take place, and when vomiting does occur in these animals it is the contents of the rumen and reticulum alone which are expelled, while true vomiting should require the escape of the contents of the fourth stomach. To enable this to take place, the material from the fourth stomach would have to pass through the narrow openings of all the three preceding stomachs. When matters are ejected fro
Size: 1685px × 1483px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiologycomparativ
