Large Intestine

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    Created by
    Waveney Wood

    Cards (14)

    • Reabsorbs water.
    • Omental appendices are small fatty projections that help with immune responses and cushion the colon.
    • Teniae Coli are thickened bands of muscle. 3 types; mesocolic, omental, and free
    • Haustra are saccules (little sacs) in the colon that give it its segmented appearance
    • Caecum starts at ileocecal Junction. 7.5cm pouch. No mesentery.
    • Appendix is an intestinal diverticulum 6-10cm in length. Contains masses of lymphoid tissue. Small meso-appendix.
    • Rectum is retroperitoneal. S3 vertebra level. S shaped. Transverse rectal folds.
    • Arterial supply: sup. Mesenteric a. = ileocolic, right colic, middle colic. Inf. MesentEric a. = left colic, superior sigmoid, sigmoid arteries
    • Arterial supply: sup. Mesenteric a. = ileocolic, right colic, middle colic. Inf. MesentEric a. = left colic, superior sigmoid, sigmoid arteries
    • Venous return: sup. Mesenteric runs to hepatic portal vein. Inf. Mesenteric runs to splenic. Joins superior mesenteric to become hepatic portal vein.
    • Caecum and Appendix drain to appendicular and ileocolic lymph nodes
    • Ascending colon drains to ileocolic and right colic lymph nodes
    • Descending and sigmoid colon drain to left colic (intermediate) lymph nodes
    • The pancreas is an accessory digestive gland. Retroperitoneal. L1-2 level. Exorcise function - pancreatic juice from acinar cells. Endocrine function - glucagon and insulin from islet cells