Sectional Anatomy Unit 4
Esophagus path
1. Begins at distal end of pharynx 2. Crosses diaphragm at Esophageal hiatus 3. Enters stomach at Cardiac sphincter
Gut Signature
Bull's eye in cross-section with echogenic center (air in lumen) and hypoechoic rim (gut wall) surrounded by another echogenic layer (periserosal fat)
Parietal Peritoneum Visceral Peritoneum
P-out layer, interior of abdominal cavity V-inner layer, covers outside of organ
Leinorenal Ligament
attaches left kidney to spleen and both to posterior abdominal wall
Lesser Omentum
attaches lesser curvature of stomach to liver
Falciform Ligament
attaches liver to anterior abdominal wall and diaphragm
Gastrosplenic Ligament
attaches spleen to stomach and both to posterior abdominal wall
Colic Compartments
division of peritoneal cavity into superior and inferior sections by transverse colon and its mesentery
Omentum
double layered fold of peritoneal membrane that attaches stomach to another organ
Mesentery
double layered fold of the peritoneal membrane that attaches part of the intestine to the posterior abdominal wall
Peritoneum
double layered, serous membrane (secretes fluid between layers) that lines abdominal cavity and covers abdominal organs formed by mesothelium
Greater Omentum
fatty apron, hangs from greater curvature of stomach; folds back on itself and attaches to transverse colon
Ligamentum Teres
lies within falciform ligament and is a remnant of the paraumbilical vein (fetal umbilical vein -> ductus venosus)
Subhepatic spaces
small slit-like spaces within the peritoneum under the liver on each side of the portal hepatis Morison's pouch-right; between liver/kidney, common collection point for ascites
Subphrenic spaces
small spaces between the diaphragm and the liver, on each side of the Falciform Ligament
Peritoneal Cavity
space between parietal peritoneum and visceral peritoneum, contains small amount of serous fluid that acts a lubricant for organs to slide around
Paracolic Gutters
spaces along the ascending and descending colon which allow fluid/blood/pus/cancer cells to flow from one area of the abdomen to another
Ligament
two-layered fold of peritoneal membrane that attaches abdominal organs to anterior/posterior abdominal wall