Chapter 47: Colon and Rectum- Anatomy Flashcards
Identify the arterial blood supply to the colon:
What are the white lines of Toldt?
Lateral peritoneal reflections of the ascending and descending colon
What parts of the GI tract do not have a serosa?
Esophagus, middle and distal rectum
What are the major anatomic differences between the colon and the small bowel?
Colon has:
- teniae coli
- haustra
- appendices epiploicae (fat appendages)
whereas the small intestine is smooth
What is the blood supply to the rectum:
Proximal?
Superior hemorrhoidal (or superior rectal) from the IMA
What is the blood supply to the rectum:
Middle?
Middle hemorrhoidal (or middle rectal) from the hypogastric (internal iliac)
What is the blood supply to the rectum:
Distal?
Inferior hemorrhoidal (or inferior rectal) from the pudendal artery (a branch ofthe hypogastric artery)
What is the venous drainage of the rectum:
Proximal?
Via the IMV to the splenic vein, then to the portal vein
What is the venous drainage of the rectum:
Middle and distal?
Via the iliac vein to the IVC