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Anatomy
4 Small & Large Intestines
13
Anatomy
Graduate
11/16/2009

Additional Anatomy Flashcards

 


 

Cards

Term

Greater omentum:

 

covers....

can be reflected....

Definition

intestines anteriorly

 

not attached

 

Term

Large bowel (quadrant, intra/retroperitoneal, associations:

1) cecum

2) Ascending colon

3) R colic flexure

4) transverse colon

5) L colic flexure

6) desc colon

7) sigmoid

8) rectum

Definition

-appendix= has its own mesentary so it is intraperitoneal

1) LRQ, associated with appendix intraperitoneal

2) retroperitoneal

3) aka: hepatic flexure

4) intraperitoneal, transverse mesocolon attaches to anterior abdom wall

5) aka splenic flexure

6)fixed=retroperitoneal

7)has its own mesentary=intraperitoneal

 

retroperitoneal=fixed

intraperitoneal=has a mesentary, can move around

Term

Small intestine

 

intra/retro?

mobility

Definition

intraperitoneal- (jejunum, ileum) and for 1st part of duodenum.

retro-duodenum

 

small intestine is Very mobile.

 

Term

3 divisions of small intestines:

 

length, quadrant, & intra/extraperitoneal location

 

**Rule of 1812

 

Definition

1) Duodenum, 1´, RUQ, initial part extraperitoneal,

 

duodenojejunal junction

 

3) Jejunum, 8´, LUQ, intraperitoneal

 

3) ileum, 12´, intraperitoneal, joins cecum in LRQ

Term

THE MESENTERY

1) supports

2) anchoring

Definition

1) 20´of INTRAPERITONEAL small intestine

2) fixed root(8") attaches (is continous with the parietal peritanium of posterior wall) posteriorly from LUQ to RLQ, small portion of anchoring, but spreads to support all small intestines

 

-duadnojejunum, iliocecum?

 

Term

Movement of Organs

1) retroperitoneal

2) intraperitoneal

 

Definition

1) fixed

2) fixed but have mesenteries that allow them to have flexible mov´t

Term

Plicae circulares

1) location

2) physical structure

3) function

4) distinct from

Definition

1) Internal small intestine

2) Circular permanent foldsof mucosa of small intestines (simple columnar epithelium)

3) Increases surface area of mucosa.  Deals with final chemical breakdown on materials and absorption of water.

4) large intestines

Term

specific characteristics of Large Intestine:

1) taeniae coli

2) haustra

3) epiploic appendages

Definition

1) 3 exaggerations of longitudinal smooth muscle...shortening exaggerates haustra.

2) segmented sacs= which create internal ridges called semilunar folds.

3) sacs of fat covered by serous membrane; dangling from large bowel, on the bowel, different

Term
Ileocecal junction
Definition
Smooth muscle sphinctor controls passage of shit from ileum to cecum.
Term

rectum:

1) location

2) inside rectum

3) epithelium transition

4) sphincters

 

Definition

1) retroperitineal pelvic organ, posterior in pelvis against sacrum

2) transverse folds

3) changes from simple columnar epithelium inside rectum to stratified squamous on outer portion

4) Internal anal sphinctor (smooth muscle, ANS, parasym from S2,S3,S4) and external (skeletal muscle, voluntary, inf rectal n.) anal sphincters

 

Term

Zones of anal canal

5

Definition

1) Rectum: simple columnar with goblet cells

*2) columnar zone

*3) anal pecten

*4) cutaneous

5) perianal skin: stratified squamous

 

*anal canal

Term

Rerouting of bowel:

1) ileostomy

2) colostomy

Definition

1) ileum brought to surface

2) large bowel brought to surface

 

**both before normal anus

 

**can be temporary

Term
Diverticulitis
Definition
outpouches on outside of large bowel.
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