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Comprehensive ABSITE - Colon Colorectal Surgery Review Questions Ana 100% Correct Answers
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Comprehensive ABSITE - Colon Colorectal Surgery ReviewQuestions Ana 100% Correct Answers
Colonic bacteria is important to produce what vitamin? - ANSWER Vitamin K
Describe the blood supply to the rectum. - ANSWER - Superior rectal artery comes off
the IMA
- Middle rectal artery comes off of the internal iliac artery
- Inferior rectal artery comes off the internal pudendal (which comes off the internal
iliac artery)
Describe the blood supply to the terminal ileum and proximal ascending colon. -
ANSWER - Supplied by the ileocolic artery (absent in 20% of individuals)
- Ileocolic artery arises from the superior mesenteric artery
Describe the blood supply to the transverse colon. - ANSWER - Middle colic artery
- Middle colic artery arises from the superior mesenteric artery
Describe the blood supply to the descending colon. - ANSWER - Supplied by the left
colic artery
- Left colic artery is a branch off the inferior mesenteric artery
Describe the blood supply to the sigmoid colon. - ANSWER - Supplied by several
sigmoidal arteries, which branches off the inferior mesenteric artery
Describe the blood supply to the proximal rectum. - ANSWER - Supplied by the superior
rectal artery, which branches off the inferior mesenteric artery
,Which of the following is a branch of the inferior mesenteric artery?
a. middle colic artery
b. ileocolic artery
c. sigmoidal arteries
d. right colic artery - ANSWER c. sigmoidal arteries
What does the ileocolic artery supply?
From where does it arise?
Where does it travel?
What else does it supply? - ANSWER - supplies terminal ileum and proximal ascending
colon
arises from superior mesenteric artery
runs into ileum and proximal ascending colon
anastomoses with right colic artery
What does the right colic artery supply?
From what does it arise?
Where does it travel?
What else does it supply? - ANSWER - supplies ascending colon
- arises from the superior mesenteric artery
- courses to the ascending colon
- anastomoses with the ileocolic artery and middle colic artery
Which structure does the middle colic artery supply?
From which artery does it arise?
Which structure does it course through?
What are the branches of the other arteries it anastomoses with? - ANSWER - supplies
the transverse colon
, - arises from the superior mesenteric artery
- courses into the transverse colon
- creates anastomoses with the right colic artery and the left colic artery
Which structures does the left colic artery supply?
Where does it originate?
To what region does it go?
Which other arteries does it anastomose with? - ANSWER - supplies the descending
colon
- arises from the inferior mesenteric artery
- moves to the descending colon
- creates anastomoses with the middle colic artery and sigmoidal arteries
What is supplied by the sigmoidal artery?
From where does it arise?
Where does it travel?
What other arteries are supplied by it? - ANSWER - supplies the sigmoid colon
- arises from the inferior mesenteric artery
- runs into the sigmoid colon
- anastomoses with the left colic artery
What does the superior rectal artery supply?
From where does it arise?
Where does it travel?
What other arteries are supplied by it? - ANSWER - supplies the proximal rectum
- originates from the inferior mesenteric artery
- enters the rectum at its upper end
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