Large Intestine: Sigmoid (pelvic) Colon Flashcards

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1
Q

Beginning of sigmoid colon

A

at Left Iliac fossa at left border of pelvic brim, as continuation of Descending colon

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2
Q

End of Sigmoid colon

A

Opposite level of 3rd sacral piece, continuous with rectum

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3
Q

Length of sigmoid colon 15-20 inches long

A

15-20 inches long

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4
Q

Periosteal covering of sigmoid colon

A

sigmoid mesocolon

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5
Q

Attachement of Lateral limb of Attached border of Sigmoid mesocolon

A

Left External Iliac Vessels, along a line from:
* 2 inches above left inguinal ligmanet to
* Bifurication of left Common iliac A

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6
Q

Attachement of Medial limb of Attached border of Sigmoid mesocolon

A

front of Sacrum, from apex to 3rd Sacral Piece

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7
Q

Contents of Sigmoid mesocolon

A
  1. Sigmoid colon (free border)
  2. Sigmoid vessels (originally Lower left Colic Vessels)= in lateral limb
  3. Superior rectal vessels = in medial limb
  4. Exteraperitoneal fat
  5. Lymph nodes and vessels
  6. Sympathetic and parasymathetic plexuses
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8
Q

inferior relations of Sigmoid colon

A
  • Urinary Bladder
  • Uterus (in female)
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9
Q

Superior relations of Sigmoid colon

A

Coils of Ileum

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10
Q

Medial relations of Sigmoid colon

A

Coils of Ileum

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11
Q

Lateral relations of Sigmoid colon

A

Lateral wall of pelvis, with 3 structures in between:
* left External Iliac vessles
* left Obturator Nerve & vessels
* Left Ovary (in female) or left Vas deferens (in male)

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12
Q

Arterial Supply of Sigmoid Colon

A

Sigmoid Artery (originally lower left colic A), which anastomose with Superior Rectal A

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13
Q

Venous Drainage of Sigmoid Colon

A

Sigmoid Veins which Drain into Inferior mesenteric V (portal Circulartion)

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