Podcast
Questions and Answers
What is the length of the rectum?
What is the length of the rectum?
About 12 cm long
What type of epithelium lines the rectal mucosa?
What type of epithelium lines the rectal mucosa?
Simple columnar epithelium
What replaces the serosa in the rectum due to the lack of a mesentery?
What replaces the serosa in the rectum due to the lack of a mesentery?
Adventitia
What is the function of the three transverse semilunar mucosal folds in the rectum?
What is the function of the three transverse semilunar mucosal folds in the rectum?
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What is the lining of the anal verge at the end of the rectum?
What is the lining of the anal verge at the end of the rectum?
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What type of cells are predominantly found in the anal crypts?
What type of cells are predominantly found in the anal crypts?
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Describe the endoscopic appearance of the orifice of the appendix.
Describe the endoscopic appearance of the orifice of the appendix.
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What is the characteristic feature of the transverse colon when viewed collectively?
What is the characteristic feature of the transverse colon when viewed collectively?
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How does the lumen of the descending colon typically appear endoscopically?
How does the lumen of the descending colon typically appear endoscopically?
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What is a characteristic feature of the rectum when observed endoscopically?
What is a characteristic feature of the rectum when observed endoscopically?
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Where is the rectum directed and where is the anal canal located in relation to it?
Where is the rectum directed and where is the anal canal located in relation to it?
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What is the characteristic feature of the sigmoid colon when observed endoscopically?
What is the characteristic feature of the sigmoid colon when observed endoscopically?
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What structures are contained within the anal triangle?
What structures are contained within the anal triangle?
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What is the ischioanal fossa?
What is the ischioanal fossa?
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Why are abscesses in the ischioanal space more painful?
Why are abscesses in the ischioanal space more painful?
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What may lead to the formation of fistulae between the skin and anal canal?
What may lead to the formation of fistulae between the skin and anal canal?
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What is Colle's fascia continuous with?
What is Colle's fascia continuous with?
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What is the position of the perineal body?
What is the position of the perineal body?
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Where does the descending colon lie in the retroperitoneum?
Where does the descending colon lie in the retroperitoneum?
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What is the main blood supply to the rectum?
What is the main blood supply to the rectum?
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What is the anastomotic vessel formed by the arteries of the midgut and hindgut?
What is the anastomotic vessel formed by the arteries of the midgut and hindgut?
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Where does the bladder neck (internal urethral orifice) lie?
Where does the bladder neck (internal urethral orifice) lie?
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In males, what is the bladder neck in direct continuity with?
In males, what is the bladder neck in direct continuity with?
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What is the apex of the bladder directed towards in both sexes?
What is the apex of the bladder directed towards in both sexes?
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What is the length of the rectum?
What is the length of the rectum?
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What is the structure that aids in supporting feces before defecation in the rectum?
What is the structure that aids in supporting feces before defecation in the rectum?
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What is the lining of the rectal mucosa?
What is the lining of the rectal mucosa?
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Where does the rectum end anatomically?
Where does the rectum end anatomically?
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What replaces the serosa in the rectum due to the lack of a mesentery?
What replaces the serosa in the rectum due to the lack of a mesentery?
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What is the characteristic feature of the anorectal junction?
What is the characteristic feature of the anorectal junction?
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What is the area around the base of each anal column that contains a hemorrhoidal artery and vein?
What is the area around the base of each anal column that contains a hemorrhoidal artery and vein?
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What is a horse-shoe shaped fat-filled space located on each side and behind the anal canal?
What is a horse-shoe shaped fat-filled space located on each side and behind the anal canal?
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What type of fascia is continuous with the membranous layer of the superficial fascia in the perineal space?
What type of fascia is continuous with the membranous layer of the superficial fascia in the perineal space?
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What may lead to the formation of fistulae between the skin and the anal canal?
What may lead to the formation of fistulae between the skin and the anal canal?
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What is the boundary of the ischioanal fossa superiorly?
What is the boundary of the ischioanal fossa superiorly?
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What is more tightly loculated than the ischioanal space in the perianal area?
What is more tightly loculated than the ischioanal space in the perianal area?
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