Peritoneum, Peritoneal Cavity and Mesenteries - Thomas Flashcards Preview

Gastrointestinal I > Peritoneum, Peritoneal Cavity and Mesenteries - Thomas > Flashcards

Flashcards in Peritoneum, Peritoneal Cavity and Mesenteries - Thomas Deck (29)
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1

Branches of the celiac trunk and the part of gut it is responsible for

Splenic artery
Left gastric
Common hepatic
Foregut

2

Branches of superior mesenteric and the part of gut it is responsible for

Ileocolic
Right colic
Middle colic
Midgut

3

Branches of inferior mesenteric and the part of gut it is responsible for

Left colic
Sigmoid branches
Superior rectal
Hindgut

4

Peritoneum - 2 layers and pain fibers

1. Parietal - lines body wall - abundant pain fibers
2. Visceral - covers viscera - lacks pain fibers

5

Visceral Peritoneum

Invests viscera/organs
Sensitive to stretching and chemical irritation
Insensitive to touch, heat, cold, laceration

6

Is the pain from visceral peritoneum localized?

Only poorly
-unmyelinated C-fibers
-crampy, colicky pain

7

Intraperitoneal organs

Covered on most sides by visceral peritoneum
Suspended from mesentery from body wall

8

Retroperiotoneal organs

Lie deep to the parietal peritoneum
Covered only on one side by parietal peritoneum

9

Primarily Retroperitoneal organs

Kidneys
Suprarenal glands (aka adrenals)
Ureters
Gonads
Aorta and IVC

10

Secondarily Retroperitoneal organs

Became retroperitoneal during development
Duodenum (desc, horiz, ascen)
Pancreas
Ascending and descending colon
Rectum

11

THE mesentery

Attaches the 'free' small intestine to the posterior body wall
Jejunum
Ileum

12

Where is the ventral mesentery?

Extends from the respiratory diaphragm to the duodenum

13

What runs through the dorsal mesentery?

Dorsal aorta and it's 3 branches

14

What mesenteries are lost during development?

Duodenum, ascending colon, descending colon and cecum
-since no longer suspended from mesentery, considered secondarily retroperitoneal

15

Peritoneal ligaments

1. Gastrosplenic ligament
2. Splenorenal ligament
-transmit nerves and vessels
-lack connective tissue

16

Omentum

-2 layered sheet of peritoneum that attaches stomach to other viscera
Lesser - from ventral mesogastrium
-hepatogastric ligament
-hepatoduodenal ligament
Greater - from dorsal mesogastrium

17

Lesser omentum is composed of what 2 ligaments?

Hepatogastric l.
Hepatoduodenal l.

18

3 ligaments of greater omentum

1. Gastrocolic l.
2. Gastrophrenic l.
3. Gastrosplenic l.

19

What are the 3 ligaments associated with liver?

Coronar l
R and L triangular l
Falciform l

20

What runs in the falciform ligament?

Ligamentum teres hepatis
-obliterated umbilical vein

21

Folds of the abdominal walls

Median umbilical fold
-urachus, midline from bladder
Medial umbilical folds (2)
-obliterated umbilical a.
Lateral umbilical folds (2)
-inferior gastic vessels, functional a and v.

22

Peritoneal Fossae

Supravesical fossa - supravesical hernias
Medial inguinal fossa - direct inguinal hernias
Lateral inguinal fossa - indirect inguinal hernias

23

Where do supravesical hernias occur?

Supravesical fossa

24

Where do direct inguinal hernias occur?

Medial inguinal fossa

25

Where do indirect inguinal hernias occur?

Lateral inguinal fossa

26

Greater sac

Most of the potential space in abdomen
Can be subdivided into supra colic and infra colic regions by colon and transverse mesocolon

27

Ascites

Excess fluid in abdomen
-abscesses may develop

28

Lesser sac

Posterior and inferior to the stomach
Can get fluid that leads to infection

29

Epiploic foramen of Winslow

Opening between greater and lesser sacs
Anterior - hepatoduodenal ligament with portal v., hepatic a. and bile duct