Mid + Hindgut - Statistics

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Answer Stats
Hint Answer % Correct
Point where midgut becomes hindgut 2/3 distally along transverse colon
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Factors that help maintain continence Ampulla of rectum
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2 Factors that help maintain continence Anorectal flexure angle
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Where is gallbladder pain often referred to back of the shoulder
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Effects of portal hypertension in terms of blood flow systems Blood flows from portal system to systemic vein system and dilation can cause rupture
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Epithelium superior + inferior to pectinate line Columnar + stratified squamous
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Meckel's diverticulum Congenital bulge of ilium - failure of vitelline duct obliteration
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Plicae Circulares (folds) Jejunum (vs Ileum) Dense
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Hernia medial to inferior epigastric vessels. Does not traverse entire inguinal canal, doesn't enter scrotum Direct Inguinal Hernia (acquired)
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Associations of gallstones female, fair, fat, forty, fertile
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Peyer's Patches (lymphoid follicle clusters) Jejunum (vs Ileum) Few
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Jejunum blood Supply - arcades + vasa recta (vs ileum) Few arterial arcades, long vasa recta
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What's cholelithiasis? Gallstone formation
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Transverse colon closely associated with what structure? Greater omentum
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SMA branches Ileal + ileocolic
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Hernia lateral to inf. epigastric vessels.Traverses entire inguinal canal, enters scrotum Indirect Inguinal Hernia (congenital)
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Nervous supply superior + inferior to pectinate line Inferior hypogastric plexus, Inferior rectal from pudendal nerve
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Superior rectal vein drainage Inferior mesenteric vein (portal system)
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Where does middle rectal artery arise from? Internal iliac
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Lymphatic drainage superior + inferior to pectinate line Internal iliac nodes, superficial inguinal nodes
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Middle rectal vein drainage Internal iliac (systemic)
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Where does inferior rectal artery arise from Internal Pudendal
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Inferior rectal vein drainage Internal Pudendal (systemic
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Lymphatic Drainage of Hindgut intestinal lymphatic trunk and cisterna chyli
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Transverse colon intra/retroperitoneal? Level? Intraperitoneal, L1
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Appendix intra or retroperitoneal? Suspended by what? intraperitoneal, mesoappendix
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SMA branches (from jejunum to transverse colon) Jejunal
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What vertebral level does IMA arise from AA L3
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McBurney's Point location lateral third from ASIS to umbilicus
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Branches of IMA (4) Left Colic (and ascending + descending)
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4 Major Anastomoses (gastric varices) left gastric and short gastric veins to oesophageal plexus
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Mesenteric fat in Jejunum (vs Ileum) Less
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SNS innervation of midgut Lesser thoracic splanchnic nerves
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Branches of IMA Marginal artery
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What acts as the collateral supply for hind and midgut? Marginal artery of Drummond allows anastomosis between SMA and IMA
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SMA branches Middle colic
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Transverse colon blood supply (+ arises from where?) Middle Colic Artery, SMA
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4 Major Anastomoses between portal and systemic circulations. Causes varices/signs Oesophageal branches of azygos + left gastric vein
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4 Major Anastomoses (caput medusa) paraumbilical veins and periumbilical superficial epigastric veins
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SMA branches Right colic
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Blood Supply to Ascending colon Right Colic Artery
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Level of rectosigmoid junction S3
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Ascending Colon intra or retroperitonal? secondary retroperitoneal
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Descending Colon intra or retroperitoneal usually? Secondary retroperitoneal
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Branches of IMA Sigmoid
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Hard to drain cos of high portal pressure Splenic vein causing splenomegaly
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Plexuses modulated by ANS Submucosal and myenteric plexus in intestinal walls
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4 Major Anastomoses (anorectal) superior and inferior rectal veins
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Hepatic Portal Vein formed of what? Superior mesenteric vein and splenic vein
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Branches of IMA Superior rectal
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Arterial supply + venous drainage superior + inferior to pectinate line Superior rectal, middle and inferior rectal
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Walls of Jejunum (vs Ileum) Thick
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Last part of Hindgut + dividor Upper half of anal canal, pectinate line
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PNS innervation of midgut Vagus
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Lumen of Jejunum (vs Ileum) Wide
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