. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. I it X JL^ Fig. 5-5. Stomach, parietal surface. 1 duodenum, 2 esophagus, 3 cardiac part of the stomach, 4 major curvature of the stomach, 5 minor curvature of the stomach, 6 greater omentum, 7 right gastroepiploic a., 8 pyloric part of stomach. of the stomach. It hangs as a fat filled, lacy apron from the stomach. Its caudal, free border is very mobile and can reach as far caudally as the pelvic inlet. In all the animals examined, it was wedged in between the stomach and the intestinal mass, cov- ering only the caudal (visceral) s
. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. I it X JL^ Fig. 5-5. Stomach, parietal surface. 1 duodenum, 2 esophagus, 3 cardiac part of the stomach, 4 major curvature of the stomach, 5 minor curvature of the stomach, 6 greater omentum, 7 right gastroepiploic a., 8 pyloric part of stomach. of the stomach. It hangs as a fat filled, lacy apron from the stomach. Its caudal, free border is very mobile and can reach as far caudally as the pelvic inlet. In all the animals examined, it was wedged in between the stomach and the intestinal mass, cov- ering only the caudal (visceral) surface of the stom- ach. The omentum is longer than the distance be- tween the dorsal body wall and the stomach. It therefore doubles on itself, forming deep and su- perficial layers or parts. The space between the two layers is the omental bursa, bursa omentalis. The omental bursa has only one opening, the epiploic foramen, into the general peritoneal cavity. The ep- iploic foramen, foramen epiploicum, is a narrow passage that lies to the right of the median plane and ventromedial to the caudate process of the liv- er. It is bounded dorsally by the caudal vena cava, ventrally by the portal vein and cranially by the caudate process of the liver. The foramen leads into the vestibule of the omental bursa, cranial to stom- ach. Access to the omental bursa from the general peritoneal cavity is through the epiploic foramen (into the omental vestibule) and then caudally over the lesser curvature of the stomach into the main part of the bursa. The lesser omentum, omentum minus, is a rem- nant of the ventral mesentery that extends between the liver and the terminal esophagus, stomach and duodenum. (For details see the ligaments of the liver) Alimentary Canal. The esophagus, esophagus (Figs. 5-1, 5-2, 5-5 to 5-7), extends from the limen of the esophageal vestibule to the cardia of the stomach. In the mature animal it is approximately 15 cm long. It can be divided into cervical, thoracic
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