Celiac Trunk & Associated Viscera Flashcards
Covers celiac trunk, esophagus, stomach, and duodenum
What are the components of the digestive system in the order they occur?
- Mouth
- Pharynx
- Esophagus
- Stomach
- Small intestines
- Large intestines
What are the three components of the small intestines in the order they occur?
- Duodenum
- Jejunum
- Ileum
What are the seven components of the large intestines in the order they occur?
- Cecum
- Ascending colon
- Transverse colon
- Descending colon
- Sigmoid colon
- Rectum
- Anal canal
What is the arterial supply of the foregut?
Celiac trunk
What is the arterial supply of the midgut?
Superior mesenteric artery
What is the arterial supply of the hindgut?
Inferior mesenteric artery
What three arteries will the celiac trunk split into?
- Left gastric artery
- Splenic artery
- Common hepatic artery
Besides splenic branches and short gastric arteries, what branches from the splenic artery?
Left gastro-omental artery
What two arteries will the common hepatic artery split into?
- Proper hepatic artery
- Gastroduodenal artery
What are the branches off the proper hepatic artery?
- Right gastric
- Right hepatic (cystic off this)
- Left hepatic
What are the branches off the gastroduodenal artery?
- Right gastro-omental
- Superior pancreaticoduodenal
What level will the esophageal hiatus occur?
Level of T10
What ligament can be found at the esophageal hiatus?
Phrenico-esophageal ligament
Where is the cardial orifice of the stomach in relation to the skeleton?
Left of midline at level of 7th costal cartilage and T11
What is the Z-line of the esophagus?
Where the mucosa changes from esophageal to gastric
What are the three esophageal constrictions?
- Cervical (upper esophageal sphincter)
- Thoracic (broncho-aortic)
- Diaphragmatic
Where is the cervical esophageal constriction?
Pharyngo-esophageal junction
Where is the thoracic esophageal constriction?
Aorta and left main bronchus
Where is the diaphragmatic esophageal constriction?
Esophageal hiatus
What arteries supply the abdominal portion of the esophagus?
- Left gastric artery
- Left inferior phrenic artery
What veins drain the abdominal portion of the esophagus?
- Portal system (left gastric vein)
- Vena caval system (azygos vein)
The esophagus is innervated by the esophageal plexus.
What is the parasympathetic innervation?
What is the sympathetic innervation?
Parasympathetic: vagus nerve
Sympathetic: greater splanchnic nerve
What is the lymph supply of the esophagus?
Left gastric and celiac lymph nodes
What are the functions of the stomach?
- Food blender and reservoir (2-3 L of food)
- Enzymatic digestion (chyme)
What is peristalsis of the stomach?
Smooth muscle contractions
What are gastric rugae?
Folds in the stomach
Where is the gastric canal?
Along the lesser curvature of the stomach
Where is the lesser curvature of the stomach?
Medial/right side closer to abdominal esophagus
Where is the greater curvature of the stomach?
Lateral/left side of the stomach
What is the cardial orifice?
Superior opening of the stomach from the abdominal esophagus