Mesenteric Small Bowel, Colon, and Appendix Flashcards
The mesenteric small intestine is a tube approximately ___ meters long that lies totally within the greater peritoneal cavity.
7 meters long
The small bowel mesentery is composed of what different structures?
Composed of connective tissue, blood vessels, and lymphatic vessels and is covered by peritoneum, which reflects from the posterior parietal peritoneum
The root of the small bowel mesentery extends from where to where?
It extends obliquely from the ligament of Treitz, just left of the L2 vertebra, to the cecum, near the right sacroiliac joint.
Difference between jejunum and ileum.
The jejunum has a feathery mucosal pattern, more prominent valvular conniventes, wider lumen, and a thicker wall.
The ileum has a less featured mucosal pattern, thinner, less frequent folds, narrower lime, thinner, less frequent folds, narrower lumen, and a thinner wall.
This consists of the cecum and appendix, colon, rectum, and anal canal.
The large intestine is approximately how many meters in length from the ileum to the anus?
The large intestine is characterized by the _________, three longitudinal bands of muscle that traverse the colon shortening it to form the haustra, the sacculations created by puckering of the bowel wall.
The _______ and ______ absorb water from the highly liquid material received from the ileum.
Cecum and ascending colon
It is a large blind pouch that extends below the level of the ileocecal valve.
The cecum generally lies in the right iliac fossa but may be quite mobile.
It is covered on all sides by peritoneum (intraperitoneal), may be fixed extraperitoneally, covered only on its ventral surface by peritoneum.
It is a long worm-like tube that hangs from near the apex of the cecum.
The ________ is extraperitoneal, lying in the anterior pararenal space, covered only on its central surface by the peritoneum.
The hepatic flexors forms two curves. What are these curves?
The proximal, more posterior curve is closely related to the descending duodenum and right kidney.
The more distal anterior curve is closely related to the gallbladder.
This structure is intraperitoneal and suspended from the transverse mesocolon that arises from the peritoneum covering the pancreas and sweeps transversely across the upper abdomen.
This structure limits the superior extent of the small bowel loops.
This colonic structure is closely related to the tail of the pancreas and the caudal aspect of the spleen.