Stomach and Duodenum Anatomy PDF

Stomach  the most dilated part of the gastrointestinal tract J  T11 – L1  J-shaped  1-1.5 lit  30-50 cc  11×25 cm  7th cartilage Rib  L1 The abdominal cavity is divided into 9 spaces by two...

Stomach  the most dilated part of the gastrointestinal tract J  T11 – L1  J-shaped  1-1.5 lit  30-50 cc  11×25 cm  7th cartilage Rib  L1 The abdominal cavity is divided into 9 spaces by two vertical lines and two horizontal lines. Abdominal Region The abdominal cavity is divided into 9 Location spaces by two vertical lines and two horizontal lines. Epigastric, umbilical, and left hypochondrium regions This is not common for all people. In some people, it may be in a different position. Stomach – Cardiac End (synonymous with heart)  Named by its proximity to the heart – Pyloric End  Funnel shaped  Curve of the J  Connected to the duodenum (pyloric sphincter) – Greater Curvature  Forms lateral surface  40 cm (16 in.) – Lesser Curvature  Forms medial surface  10 cm (4 in.)  Incisura angularis   Fundus  Corpus (Body)  Pyloric  1) Antrum  2)Pyloric duct  Intermediate sulcus Pyloric constriction and contains a thickened ring of gastric circular muscle. What is wrong with this picture? Histology of stomach  Mucosal layer  Submucosal layer  Muscular layer  Peritoneal layer Mucosal layer- Longitudinal fold When empty—mucosa and submucosa form longitudinal folds called rugae. What is wrong with this picture? Surfaces and Borders Adjacent of anterior surface of the stomach Adjacent of anterior surface of the stomach Adjacent of posterior surface of the stomach The number of circular muscle fibers is excessive and leads to stenosis. Celiac artery  1. L. gastric a. 2. Splenic a. 3. Common hepatic a. Celiac artery  Left gastric artery  Esophageal b.  Gastric b.  Epipeloic b. Splenic artery  Splenic artery  Pancreatic b.  Short gastric b.  L. gastroepiploic b.  Splenic b. Common hepatic artery  Common hepatic artery  Gastroduodenal a.  R. gastric a.  Cystic a.  R. Hepatic a.  L. Hepatic a. Gastroduodenal artery R. gastric a. Artery of stomach  1) Left gastric a. (celiac a.)  2) Right gastric a. (common hepatic a.)  3) L. gastroepipeloic a. (splenic a.)  4) R. gastroepipeloic a. (gastroduodenal a.)  5) Short gastric a. (splenic a.) Vein of stomach  R.gastric v.  L.gastric v.  R. gastroepiploic v.  L. gastroepiploic v.  Short gastric v.  Prepyloric v. Nerve Lymphatic node Duodenum Duodenum  The first part of the small intestine  C-shaped  Adjacent to the head of the pancreas  25cm  Bulb  Desending  Horizontal  ascending Duodenum Relationship of deuodenum Artery