白袍恐懼症

<Function>

Water absorption: right colon can absorption 6 L/min

Electrolyte transport: 吸收Na, Cl，exchange K, bicarbonate in the right colon

Nutrition: short chain fatty acid

Microflora: 產生vitamin K

Colonic gas:200~2000 ml/day

<Anatomy>

anal canal: 4cm(dentate line以下)

rectum: 13cm

sigmoid colon: 25cm

descending colon: 25cm

transverse colon: 38cm

ascending colon: 13cm

cecum: 6cm

surgical anal canal上界 = anorectal upper margin (sphincter鎖住的地方)

[external sphincter]

  -subcutaneous: anal verge外

  -superficial: dentate line以下

  -deep: dentate line以上

傷到levator ani, deep external sphincter會incontinence

<Function>

Water absorption: right colon can absorption 6 L/min

Electrolyte transport: 吸收Na, Cl，exchange K, bicarbonate in the right colon

Nutrition: short chain fatty acid

Microflora: 產生vitamin K

Colonic gas:200~2000 ml/day

<Anatomy>

anal canal: 4cm(dentate line以下)

rectum: 13cm

sigmoid colon: 25cm

descending colon: 25cm

transverse colon: 38cm

ascending colon: 13cm

cecum: 6cm

surgical anal canal上界 = anorectal upper margin (sphincter鎖住的地方)

[external sphincter]

  -subcutaneous: anal verge外

  -superficial: dentate line以下

  -deep: dentate line以上

傷到levator ani, deep external sphincter會incontinence