Small Intestine and Colon Flashcards
T/F: Parietal peritoneum is very pain sensitive to inflammation and stretching
True
The parietal peritoneum is supplied somatic pain from
ventral rami of T7- L1
Visceral pain to the gut follows ______ innervation back
sympathetic
T/F: Dorsal mesentery and visceral peritoneum feels no sensation
True
Parietal pain follows _____ back
ventral ramii
For secondarily retroperitoneal organs, the parietal peritoneum is sensitive to _____ pain
somatic
All of the small intestine except what part is mesenteric?
1st segment of duodenum
Colon is divided into what segments?
Cecum, ascending colon, transverse colon, descending colon, and sigmoid colon (and appendix)
Small intestine is divided into what segments?
Duodenum, jejunum, and ileum
Cecum is in what abdominal quadrant?
lower right quadrant
Ascending colon is in what abdominal quadrants?
Lower to upper right quadrant
Transverse colon is in what ab quadrants?
Upper right to left quadrant
Descending colon is in what ab quadrants?
Left upper to lower quadrant
Plicae circulares are present in what 2 segments of small intestine?
Duodenum and jejunum
In duodenum, plicae circulares are ______ numerous and _______ prominent
more numerous and more prominent
In jejunum, plicae circulares are ______ numerous and _______ prominent
less numerous and less prominent
The ileum has ______ on its surface
lymphatic nodules
Bits of visceral fat on the colon; more fat on descending and sigmoid colon
appendices epiploicae
Chambers of colon
haustre
Bend in the transverse to descending colon is called
splenic flexure
bend in ascending to transverse colon called
hepatic or right colic flexure
______ artery supplies transverse colon
middle colic artery
______ artery supplies the major segments of colon namely the ascending colon
right colic artery
____ artery supplies ileocecal structures
ileocolic artery
Jejunal arteries, ileal arteries, ileocolic artery, right colic artery, and middle colic artery come off of ______ artery
superior mesenteric artery
____ artery supplies descending colon
left colic artery
___ artery anastomoses with middle colic artery at midgut to hindgut transition forming connection between superior and inferior mesenteric arteries
left colic artery
Ascending and descending branches of left colic artery supply
descending colon
Ascending and descending branches of left colic artery, left colic artery, superior rectal artery, sigmoid arteries are all branches of ______ artery
inferior mesenteric artery
right most artery of the hindgut
superior rectal artery
______ artery runs in or near the root of the mesentery toward the lower right quadrant
superior mesenteric artery
_______ artery runs in transverse mesocolon
middle colic artery
____ artery runs retroperitoneally to ascending colon
right colic artery
______ artery runs retroperitoneally toward the ileocecal junction
ileocolic artery
_______, _____ and ______ run in the mesentery off of the superior mesenteric artery
Middle colic artery, jejunum branches, and ileum branches
______ turnis into the mesentery proper to supply the distal ileum
ileal branch of ileocolic artery
The ileocolic artery is (mesentery or retroperitoneal)
retroperitoneal
The ______ artery is a mesenteric branch to the appendix in the mesoappendix
appendicular artery
The _____ artery originates from the aorta at about L3 and is mostly retroperitoneal
inferior mesenteric artery
The ____ artery is mostly retroperitoneal, but enters the transverse mesocolon to anastomose with with middle colic artery (superior mesenteric artery)
left colic artery
The ______ arteries are mesenteric lying in the sigmoid mesocolon
4 sigmoid arteries
Final branch of the inferior mesenteric artery is the _____ artery which descends into the pelvis
superior rectal artery
The IMA and SMA anastomoses function to ______
circumvent blood flow in occasion of blockage
Middle colic artery (SMA) anastomoses with left colic artery (IMA) at the _______ flexure
left colic flexure
Ileocolic artery (SMA) anastomoses with the right colic artery (IMA) near the _______
ileocecal junction
Sigmoid artery (SMA) anastomoses with the superior rectal artery (IMA) at the transition from the ____ to the _____
sigmoid colon to the rectum
______ provide channels for the spread of infections within the abdominal cavity
paramesenteric and paracolic gutters
small anastomosing loops arranged in multiple rows branching off of the intestinal arteries
arcades
straight vessels that go perpendicularly into the gut wall
vasa recti
The vasa recti in jejunum is _____ (longer or shorter)
longer
The vasa recti in ileum is _____ (longer or shorter)
shorter
Jejunum is ______ muscular and _____ fat
more muscular; less fat
ileum is ______ muscular and _____ fat
less muscular; more fat
