Chapter 80: The Anus and Anal Canal

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Multiple Choice Question 1 of 5

1. Question

Which epithelium is below the dentate line?

Non-keratinised stratified squamous epithelium
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Keratinised stratified squamous epithelium
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Transitional epithelium
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Columnar epithelium
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Cuboidal epithelium
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Multiple Choice Question 2 of 5

2. Question

What is the main lymphatic drainage of the anus?

Para-aortic lymph nodes
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Inguinal lymph nodes
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Inferior mesenteric lymph nodes
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No lymph node drainage
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Lymph nodes of the thigh
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Multiple Choice Question 3 of 5

3. Question

What is the definition of an anal fissure?

A longitudinal ulcer in the anoderm extending from the anal verge proximally towards, but not beyond, the dentate line
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A circumferential ulcer in the anoderm extending from the anal verge proximally towards, but not beyond, the dentate line
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A longitudinal ulcer in the mesoderm extending from the anal verge proximally towards, but not beyond, the dentate line
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A longitudinal ulcer in the anoderm extending from the anal verge proximally towards, and beyond, the dentate line
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A longitudinal ulcer in the anoderm extending from the anal verge proximally towards, and including, the rectum
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Multiple Choice Question 4 of 5

4. Question

What is the definition of a fistula-in-ano?

An acute communication extending from the anus and the skin
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A chronic abnormal communication extending from the rectal lumen to the bladder
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A chronic abnormal communication extending from the anal lumen to the rectum
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A chronic abnormal communication extending from the anorectal lumen to an external opening usually on the skin
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A chronic abnormality that only has one opening arising from the anorectal lumen
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Multiple Choice Question 5 of 5

5. Question

What is the most common fistula-in-ano?

Extrasphincteric
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Trans-sphincteric
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Intersphincteric
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Anorectal
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Suprasphincteric
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Chapter 80: The Anus and Anal Canal

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