Posterior Abdominal Wall Flashcards Preview

Anatomy (Karen) > Posterior Abdominal Wall > Flashcards

Flashcards in Posterior Abdominal Wall Deck (29):
1

What is the origin of psoas major?

lumbar vertebrae from inferior border of T12-superior border of L5

medial ends of transverse processes

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2

What is the insertion of psoas major?

lesser trochanter (femur) w/iliacus (conjoin iliacopsoas tendon)

3

What structures lie posterior to psoas major?

lumbar veins and arteries to abdominal walls

4

Where is the lumbar plexus?

ventral rami L1-L4 within posas major

nerves to abdomen and lowe limb

5

What structures lie anterior to psoas major?

sympathetic trunks

psoas minor (2/3)

6

What is the origin of quadratus lumborum?

tips of transverse processes (L5?)

top of posterior iliac crest

7

What is the insertion of quadratus lumborum?

inferior surface of 12th rib (stablizes it)

8

What is the origin of iliacus?

iliac fossa

9

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10

The posterior lamina of the thoracolumbar fascia extends from

tips of the spinous processes

from sacrum to neck

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11

The middle lamina of the thoracolumbar fascia extends from

medial tip of transverse processes

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12

The anterior lamina of the thoracolumbar fascia extends from

the anterior surface of the tips of the transverse processes

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13

The posterior compartment of the thoracolumbar fascia contains

erector spinae

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14

The anterior compartment of the thoracolumbar fascia contains

quadratus lumborum

15

What is a psoas abscess?

  • TB osteomyelitis from lumbar VC entering psoas
  • pus can't burst through fascia, remains in psoas envelope
  • tracks down posterior abdominal wall beneath inguinal ligament

16

Kidneys sit on

quadratus lumborum, ~rib 12

~T12-L3

right kidney is lower than left

17

What are the dimensions of the kidney?

10cm long

5cm wide

2.5cm thick

18

What encloses the kidney?

extraperitoneal fat

renal fascia

perirenal fat

fibrous capsule

19

What is the organization of the renal hilar structures?

renal vein (anterior)

renal artery

ureter (posteroinferior)

20

The right renal artery travels

behind the IVC

21

Renal arteries split into ___ segments

5

22

Renal veins drain into

the IVC

23

The left renal vein travels

anterior to the aorta

posterior to the SMA

24

The ureters are ___ long

25-30cm

10-12in

25

On radiology, the path of the ureters can be indicated by

the tips of the transverse processes

(travels along posterior abdominal wall, psoas major)

26

What are the sites of narrowing along the ureter?

narrowing of renal pelvis to form ureter

tipping over pelvic brim to travel on lateral pelvic walls

entering the bladder

potential sites of impaction or ubstruction by renal/kidney stones

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29

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