Alimentary System Anatomy Class 2 Flashcards
What is the Peritoneum ?
A transparent serous membrane that covers the body wall and organs. It is one continuous layer with two subdivisions based on what it is touching.
What are the 2 subdivisions of the peritoneum and what is found between these two layers ?
Visceral peritoneum and Parietal peritoneum and the peritoneal cavity is found between these two layers.
What are the names of the two major divisions of the peritoneal cavity ?
Greater sac and lesser sac
Through which passage does the two divisions of the peritoneal cavity communicate ?
The Epiploic foramen (opening in the omental bursa)
When an organ is completely surrounded by visceral peritoneum it is said to be _____
Intraperitoneal
When an organ is only partly covered by peritoneum on its anterior wall that organ is said to be _____
Retroperitoneal
What is the acronym used to remember which organs are Retro-peritoneal ?
Supra-renal (adrenal glands)
Aorta
Duodenum
Pancreas Uterus Colon Kidneys Esophagus Rectum
Name some intraperitoneal organs
Stomach Spleen Liver Jejunum Ileum Transverse colon Sigmoid colon
What is present within the peritoneal cavity ?
Peritoneal fluid
Which layer of the peritoneum is more sensitive to pressure, pain, heat and cold ? Where is this pain innervated from ?
Parietal
lower 6 thoracic nerves and L1 (somatic and precisely located)
What are the attachments of the greater omentum ?
The greater curvature of the stomach and the transverse colon
What are the attachments of the lesser omentum ?
The lesser curvature of the stomach to the liver.
What is the visceral peritoneum innervated by ?
Autonomic nerves (dull and poorly localized pain therefore pain is referred to the mid-line).
Which 3 main wall muscles are found on the posterior abdominal wall ?
illiacus
Psoas major
Psoas minor
What are the 3 major openings in the diaphragm and at what vertebral levels do they occur ?
Caval hiatus T8
Esophageal hiatus T10
Aortic hiatus T12
