Trans - Colon, Rectum, Anus Flashcards Preview

[OS 206] 1st Exam > Trans - Colon, Rectum, Anus > Flashcards

Flashcards in Trans - Colon, Rectum, Anus Deck (96)
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1

normal frequency of defecation

3x per day to once in 3 days

2

odor of stool and flatus due to:

sulfur containing compounds in gut flora

3

gastrocolic reflex: definition

movement of the colon due to stretching of the stomach and byproducts of digestion in the small intestine

4

irritable bowel syndrome is caused by:

heightened visceral sensitivity causing exaggerated gastrocolic reflex

5

the foregut is composed of:

1. GI tract from esophagus to small intestine proximal to bile duct
2. liver
3. pancreas
4. bile ducts

6

the midgut is composed of:

1. GI tract from small intestine distal to bile duct to proximal transverse colon
2. appendix

7

the hindgut is composed of:

1. GI tract from distal transverse colon to rectum

8

the large intestine is ___ in length

around 5ft

9

T/F: the diameter of the lumen of the colon gradually increases from the cecum to the sigmoid

F, the diameter of the colon decreases as it proceeds distally

10

incomplete outer longitudinal muscle layer of the colon

taenia coli

11

areas where the taenia coli converge

1. appendix
2. rectosigmoid junction (until anus)

12

enumerate the 3 taenia coli and their attachments

1. mesocolic - transverse and sigmoid mesocolon
2. omental - appendices epiploicae
3. free - no attachments

13

outpocketings of colon wall between taenia coli

haustrae

14

difference of haustrae from plicae circulares

plicae circulares encircle the whole circumference of the lumen, haustrae do not

15

small fatty omentum-like projectuions distributed near the area of the taenia coli along the colon wall

appendices epiploicae

16

functions of the colon

1. absorption of water and electrolytes
2. propulsion and storage of unabsorbed fecal waste

17

location of cecum

right lower quadrant

18

T/F: the cecum is almost entirely covered by peritoneum and is suspended by a mesentery

F, it has no mesentery

19

entrance of the ileum into the cecum

ileocecal valve

20

T/F: the ileocecal valve is a true sphincter

F

21

importance of appendix in embryo

part of the immune system (GALT)

22

appendix is most commonly located

retrocecally

23

the mesentery of the appendix is the:

mesoappendix

24

McBurney's point

historically a common basis for locating the appendix on a diagonal incision

1/3 of the way along the oblique line joining the ASIS and the umbilicus

25

since the position of the appendix is variable, surgeons now prefer to make an incision on the:

point of maximal tenderness

26

T/F: the ascending colon is intraperitoneal

F, it is retroperitoneal

27

T/F: the ascending colon has no mesentery

T

28

innervation of ascending colon

vagus

29

longest part of the colon

transverse colon

30

T/F: the transverse colon is intraperitoneal

T