Abdominal Cavity Flashcards
Peritoneum of abdominal cavity (2)
Parietal - sensitive to pain and pain can be localized
Visceral - pain is poorly localized
Intraperitoneal organs
completely covered by visceral peritoneum
Retroperitoneal organs
outside of peritoneal cavity; partially covered with peritoneum usually on one surface
Intraperitoneal organs (7)
liver spleen stomach transverse colon cecum small intestine sigmoid colon
Retroperitoneal organs (4)
pancreas
duodenum
ascending colon
descending colon
Retroperitoneal structures (SAD PUCKER)
Suprarenal gland Aorta (and IVC) Duodenum (2 and 3) Pancreas Ureters Colon (ascending and descending) Kidneys Esophagus Rectum
Spaces in peritoneal cavity (3)
Greater sac - main and larger part of cavity
Lesser sac (Omental bursa) - lies posterior to stomach and lesser omentum
Omental foramen - posterior on free edge of lesser omentum
Folds of peritoneum
Greater omentum
Lesser omentum
Mesentary
Mesocolon
“fatty apron”
Double-layered extension of peritoneum extending off the greater curvature of the stomach
Greater omentum
connects the lesser curvature of the stomach and proximal part of the liver
(aka Gastrohepatic ligament)
Lesser omentum
Two folds of parietal peritoneum associated with small intestine
Mesentary
Fold of peritoneum associated with transvers and sigmoid colon
Mesocolon
provide route for neurovasculature to reach intestines
Mesentary and Mesocolon
Abdominal organs (8)
Esophagus Stomach Small intestine Large intestine Spleen Pancreas Liver Gall bladder
3 constrictions of esophagus
Cervical
Thoracic
Diaphragmatic
Food passes rapidly through esophagus due to ______ ______
peristaltic action
The “final door” between esophagus and stomach
inferior esophageal sphincter
where the esophagus pierces the diaphragm
In the right crus of diaphragm
esophageal hiatus
Where is the esophagogastric junction?
passes through the tip of the xiphoid process
Parts of stomach (6)
Cardia Fundus Body Pyloric part Lesser curvature Greater curvature
Areas of pyloris (4)
Pyloric antrum - wide part at top
Pyloric canal - narrow part
Pyloric orifice - opening into duodenum
Pyloric sphincter - controls flow of stomach contents into duodenum
What’s the Z-line?
The abrupt transition of mucosa between esophagus and stomach
What is chyme?
gastric juice + partially digested food that leaves the stomach
Gastric rugae
folds of gastric mucosa
primary site for absorption of nutrients from ingested materials
small intestine
3 divisions of small intestine
duodenum
jejunum
ileum
first and shortest part of small intestine
widest and most fixed part
C-shaped around of head of pancreas
duodenum
Bile and main pancreatic ducts enter the posterior wall of the
duodenum
ducts at duodenum join to form the ________ ________ which opens at the _______ ______ _____ (or the ampulla of Vater)
hepatopancreatic ampulla
major duodenal papilla
Proximal part of duodenum receives blood from ____
Distal part of duodenum receives blood from _____
celiac trunk
superior mesenteric artery
Where accessory pancreatic duct opens in duodenum
Minor duodenal papilla
begins and duodenojejunal flexure
most lies in LUQ of the infracolic compartment
Jejunum
ends at ileocecal junction
most lies in RLQ
Ileum
blood supply to jejunum and ileum
superior mesenteric artery
small arteries that go straight to small intestine are called ______ _______ and branch from loops called ______ ______
vasa recta
arterial arcades
site where water is absorbed from the indigestible residue of the liquid chyme which converts it into stool or feces
large intestine (colon)