Lecture 4 Intro to Abdominal Viscera

What are all these organs?

1. Esophagus

2. Stomach

3. Liver

4. (Pylorus) Pyloric sphincter

5. Duodenum

6. Common Hepatic duct

7. Gall Bladder

8. Cystic duct

9. Common Bile Duct

10. Pancreas

11. Spleen

12. Accessory pancreatic duct

13. Main pancreatic duct

14. Jejunum (SI)

15. Ileum (SI)

16. Vermiform Appendix

17. Cecum (LI)

18. Ascending Colon (LI)

19. Transverse Colon (LI)

20. Descending colon (LI)

21. Sigmoid Colon (LI)

22. Rectum (LI)

What two sections can abdominal contents be divided into?

Gastrointestinal system (stomach and intestinal organs)

Urogenital system (reproductive and urinary organs)

What is the order for the Gastrointestinal tract? (proximal to distal?)

What are the embryonic division of the GIT?

Foregut, Midgut, Hindgut

What is all included in the foregut?

Esophagus and stomach

PROXIMAL duodenum

Liver, gallbladder and bile ducts

Pancreas

What is in the midgut?

Duodenum, jejunum and ileum

cecum, ascending colon

PROXIMAL half of transverse colon

What is in the hingut?

DISTAL half of transverse colon

Sigmoid colon and rectum

What supplies the foregut?

Celiac Trunk

What supplies the midgut?

Superior mesenteric Artery

What supplies the hindgut?

Inferior mesenteric artery

When does rotation of the midgut begin during development?

During month 2

Where does the small intestine come during development?

Midgut

What are the embryonic origins of the enteric nervous system?

Ectoderm

What does intraperitoneal structures mean?

Structures suspended by mesentery within the peritoneal cavity (mesocolon)

What structures are (Primary) Retroperitoneal?

Kidney, Ureter, Bladder, Abdominal aorta, IVC, esophagus, rectum

What structures are Secondarily Retroperitoneal?

Duodenum, pancreas, ascending and descending colons

These structures have visceral peritoneum on their anterior surface

What structures make up the Intraperitoneal Anterior Layer?

Liver, gallbladder, spleen, stomach, 1st segment of the duodenum, jejunum, ileum, cecum, appendix, transverse colon, sigmoid colon, proximal rectum

What structures make up the middle layer of secondarily Retroperitoneal?

Duodenum, pancreas, ascending colon, descending colon

What structures make up posterior layer retroperiotneal?

Kidneys, adrenal glands, ureters, aorta, IVC