deck_1668948 Flashcards
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Where is the jejunum found? Where does it begin, what course does it take and where does the ileum end?
The jejunum is the second part of the small intestine, beginning at the duodenojejunal flexure where the digestive tract resumes an intraperitoneal course. The third part of the small intestine, the ileum, ends at the ileocaecal junction.
How long are the jejunum and ileum together?
6-7 metres
In fifths how long are the jejunum and ileum in comparison to one another
Jejunum - 2/5Ileum - 3/5
Where does the jejunum mostly lie?
Left Upper Quadrant
Where does the Ileum mostly lie?
Right Lower Quadrant
Outline the arterial and venous supply of the duodenum (Remember separate into proximal and distal)
Arterial supplyo Proximal to bile duct • Coeliac trunk -> Common hepatic artery -> Gastroduodenal artery -> Superior pancreaticoduodenalo Distal to bile duct • Superior mesenteric artery -> Inferior pancreatico duodenalVenous supplyo Hepatic portal veino Superior mesenteric veino Splenic vein
Outline the arterial and venous supply of the jejunum and ileum
Arterial supply o Superior Mesenteric Artery -> Jejunal arteryo Superior Mesenteric Artery -> Ileal arteryVenous supplySuperior Mesenteric Vein
Outline the arterial and venous supply of the o Caecum and Appendix
o Abdominal Aorta -> SMA -> Ileocolico Abdominal Aorta -> SMA -> Ilecolic -> Appendicular Venous supplyIleocolic vein
Outline the arterial and venous supply of the Ascending Colon, Right Colic Flexure
Arterial supplyo SMA -> Ileocolico SMA -> Right colicAnastamose with each other to form series of anastamotic arcades that together form MARGINAL ARTERYVenous drainageo Ileocolic veino Right colic vein
Outline the arterial and venous supply of the Transverse Colon
Arterial supplyo SMA -> Middle colico SMA -> Right colico IMA -> Left colic Venous drainageo Middle colic vein
Outline the arterial and venous supply of the Descending and Sigmoid Colon
Arterial supplyo IMA -> Left Colic o IMA -> Sigmoid Venous drainageo Left colico Sigmoid vein
Outline the arterial and venous supply of the Rectum
Arterial supplyo IMA -> Superior Rectal -> R+L superior brancho Common iliac -> R+L Internal iliac -> R+L middle rectal o Common illiac -> R+L Internal Iliac -> Inferior Pudendal -> R+L inferior rectal Venous drainage o Superior, middle and inferior rectal veins o Superior drains into IMV, splenic and then portalo Middle and inferior drain into systemic
Outline the arterial and venous supply of the Anal canal
Arterial supply o Superior rectal artery above pectinate lineo Inferior rectal arteries below pectinate line Venous Drainageexternal hemorrhoidal plexus of veins
What do the anastamosing loops of the superior and inferior mesenteric arteries form?
arterial arcades