Large Intestine Flashcards
Large intestine
frames the _________ on ___ sides
Extends from the ______ to the ___
About ______ long & _____ wide
Divided into 4 main sections _____ , _____, &______ , _______
small intestine
3
ileocecal valve
anus
1.5m; 6.5cm
Caecum; colon; anal canal; rectum
Large intestine
It starts in the _______ region of the pelvis, just at or below the right waist
It enters the ________ region to end as the anal canal
right iliac
lower hypogastric
The large intestine exhibits three features not seen elsewhere
______,______ , and _______.
N.B: except for its _______
Teniae coli
haustra
epiploic appendages
terminal end
Blood supply of large intestine
The different parts of L.I are supply by the the branches of ______ or ___________ artery
sup. mesenteric
inf. mesenteric artery
Large intestine blood supply
SMA:
________, _____ &_____ Artery
IMA:_____ &____ artery
right colic
ileocolic
middle
left colic; sigmoid
large intestine is drain by the accompanying vein
The ________ and ______ veins empties into the __________ vein
sup. mesenteric & inf. mesenteric
Hepatic portal
INNERVATIONS OF large intestine
The _____ and ____ plexus innervates the large intestine based on their embryonic origin
sup. &inf. mesenteric
Large intestine
Note that the parasympathetic innervation is via the ___________ nerves & sympathetic innervation via the ________ nerves
pelvic splanchnic
lumbar splanchnic
Lymphatic drainage if small intestine
4 set of lymph nodes
______,_______,______, and ____
Epicolic Paracolic Intermediate Terminal
Subdivision of the large intestine
The saclike cecum
- ( “_________”)
- Lies below the _____ in the ____ fossa
- Measurement: ___ by ____cm
- The (1st,2nd,3rd or 4th?) part of the large intestine.
- Attached to its _____ surface is the blind, _____like ______ that contains masses of ______
blind pouch
ileocecal valve
Right iliac
6 by 7.5
First
posteromedial
worm
vermiform appendix
lymphoid tissue.
Vermiform appendix
A (broad or narrow?) ___-like diverticulum
About ___ cm below the ileocaecal junction
Appendix varies from ___-___ cm (AV of 9 cm)
Typical width is all about _____.
Narrow
worm
2
2 to 20
5 mm
There are no changes in the diameter of appendix’s lumen with age
T/F
F
There are
ascending colon
(___cm) , it travels up the (right or left?) side of the abdominal cavity to the level of the _____
it makes a right angle turn, the _______(____ flexure before traveling across the abdominal cavity as The ______ colon
12.5
right
right kidney
right colic
hepatic
transverse
The transverse colon
( ___cm) is directly anterior to _____, it bends acutely at the _____(____) flexure & descend to as the the left side of the posterior abdominal wall as the _____ colon
50
spleen
left colic ; splenic
descending
The descending colon
Inferiorly, it enters the pelvis, where it becomes the __ shaped ___ colon .
S
sigmoid
COLON
The colon is ___peritoneal, except for its ____ and ____ parts.
These parts are ___peritoneal and anchored to the posterior abdominal wall by mesentery sheets called _____
It has an ________ shaped connection/ root
Retro
transverse and sigmoid
intra
mesocolons
inverted V
Diverticulosis: is a medical condition in which ___——— called diverticula develop along the colon
multiple saclike protrusions
Crohn’s disease: is a chronic _________ disease of unknown etiology which can affect any part of the alimentary tract, but most often the _______ and _______
Appendicitis: is an inflammation of the ______
inflammatory bowel
terminal ileum and colon
appendix
INTERIOR OF THE CAECUM
The interior of the caecum presents two orifices— ____ orifice and _____ orifice.
The _____ orifice is the prominent feature of the interior of the caecum.
ileocaecal
appendicular
ileocaecal
Ileocaecal Orifice
The orifice measures about __ cm transversely.
This orifice is guarded by a valve called ______.
The valve has two lips: upper and lower.
The upper lip is (smaller or larger?) and (horizontal or vertical?) . It lies at the level of ________.
The lower lip is (shorter or longer?) and (concave or convex?) upwards. It lies at the level of __________.
The two lips meet at the ends and are continued as the mucous folds called _____, which may act as caecocolic sphincter
2.5
ileocaecal valve
Smaller; horizontal ; ileocolic junction
Longer ; concave ; ileocaecal junction
caecal frenula
If caecum is distended, the obstruction is in the _______ and if it is empty the obstruction is in the ______
large intestine
small intestine.
The caecum is supplied by the _____ and _____ caecal branches of the ______ artery, a branch of ________ artery
Anterior
Posterior
ileocolic
superior mesenteric
Appendix is longer in who??
Adults of children
Children
The base of the appendix is marked on the surface by a point __ cm below the intersection between the ______ plane and the right ______ line (right lateral plane).
2
transtubercular
midclavicular
