Trans - Retroperitoneum, Posterior Abdominal Wall, Lumbar Plexus Flashcards Preview

[OS 206] 1st Exam > Trans - Retroperitoneum, Posterior Abdominal Wall, Lumbar Plexus > Flashcards

Flashcards in Trans - Retroperitoneum, Posterior Abdominal Wall, Lumbar Plexus Deck (82)
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1

Contents of retroperitoneum

SADPUCKER

Suprarenal glands
Aorta and IVC (great vessels)
Duodenum (descending and transverse)
Pancreas (except tail)
Ureters
Colon (ascending and descending)
Kidneys
Esophagus
Rectum

2

Primarily retroperitoneal organs: definition and examples

Organs that are retroperitoneal since embryonic development

e.g. urinary organs, great vessels, thoracic esophagus, part of rectum

3

Secondarily retroperitoneal organs: definition and examples

Organs that become retroperitoneal due to post-embryonic rotation

e.g. pancreas (head, neck, body), duodenum (distal segments), colon (ascending and descending)

4

3 main compartments of retroperitoneum

1. Anterior pararenal
2. Perirenal
3. Posterior pararenal

5

Perirenal space: contents

Kidney, adrenals, ureters, hilar vessels, lymph nodes, fat

6

Posterior pararenal space: contents

Fat

7

3 anatomic zones of retroperitoneum

1. Centromedial
2. Lateral
3. Pelvic

8

Anatomic zone where hematoma needs immediate operation

Centromedial

9

Centromedial zone: contents

Great vessels - aorta and IVC

10

Lateral zone: contents

Suprarenal glands, kidneys, ureters, pancreas, colon (ascending and descending)

11

Pelvic zone: contents

Spermatic cord, ovarian vessels, bladder, distal ureters, branches of common iliac

12

Level of the caval hiatus

T8

13

Level of the esophageal hiatus

T10

14

Level of the aortic hiatus

T12

15

Psoas major: action

Pulls the leg and thigh towards the body

16

Psoas major: innervation

L2-L4

17

Psoas sign: definition

Sign indicating irritation of the iliopsoas group of hip flexors – manifests as pain in psoas region upon flexing hip

18

Iliacus: innervation

L2-L4

19

Iliacus: action

Thigh and trunk flexion

20

Quadratus lumborum: innervation

L1-L3

21

Location of bifurcation of abdominal aorta

L4 level
Left of the iliac crest, 2cm below the navel

22

Origin of median arcuate ligament

crura of diaphragm

23

Origin of medial arcuate ligament

psoas fascia

24

Origin of lateral arcuate ligament

quadratus lumborum fascia

25

What passes through the median arcuate ligament

aorta

26

What passes through the medial arcuate ligament

psoas major

27

What passes through the lateral arcuate ligament

quadratus lumborum

28

Level where the common iliac veins unite to form the IVC

L5

29

Path of blood from the abdominal viscera to the IVC

Viscera --> portal venous system (through liver) --> hepatic vein --> IVC

30

Veins of the posterior abdominal wall all drain into the IVC except for the (a)________ which drains into the (b)________

a. left gonadal vein
b. left renal vein