Large intestine: Arterial Supply, lymphatic drainage & Nerve supply Flashcards

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1
Q

Parts of Colon derived from Midgut are supplied by Arterial branches of

A

Superior Mesenteric A

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2
Q

Superior Mesenteric A branches supplying Colon (midgut)

A
  • IleoColic A
  • Right Colic A
  • Middle Colic A
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3
Q

Parts of Colon derived from hindgut are supplied by Arterial branches of

A

Inferior Mesenteric Artery

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4
Q

Branches of Inferior Mesenteric Artery Supplying Colon (Hindgut)

A

Superior & inferior left Colic Arteries

Inferior Left colic Becomes Sigmoid A

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5
Q

Surgical Importance Of Marginal A of durmmond

A
  • It connects all Arteries, thus creating channels between Superior & inferior mesenteric As, it also give direct branches to colon (vasa recta)
  • Therefore it can maintain** Viability **of Long segments of Colon after division of major Colic Branches
  • this allows for possibilty of Colon bypass surgery
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6
Q

Lymph nodes Receiving drainages of Colon

A
  • Epicolic LN: on wall of bowel
  • Paracolic LN: between Marginal A and bowel
  • Intermediate nodes: along Colic Arteries
  • Central Nodes: along superior & inferior mesenteric Arteries
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7
Q

Parasympathetic Nerve supply of Colon

A

divided into 2 groups:
* Caecum, ascending & right 2/3 of transverse Colon= Vagus N
* Left 1/3 transverse Colon, descending & Sigmoid Colon= Pelvic Splanchnic N (Nervi erigente) from S2,3,4

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8
Q

Sympathetic Nerve supply of Colon

A

Greater & lesser Splanchnic Nerves
(supplying Symp. to BV)

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