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Viscera Lecture > Posterior Abdominal Wall > Flashcards

Posterior Abdominal Wall Flashcards

1
Q

R and L, superior thickening of the psoas fascia

A

medial arcuate ligament

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2
Q

R and L, superior thickening of the quadratus lumborum fascia

A

lateral arcuate ligament

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3
Q

psoas major origin, insertion, and innervation

A

o: T12-L5
I: lesser trochanter of femur
Inn: ventral rami L1-L3

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4
Q

chief flexor of the hip

A

iliopsoas

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5
Q

psoas minor origin, insertion, and innervation

A

o: T12-L1
I: pectinate line: iliopectinate eminence (iliopubic eminence)
Inn: ventral rami L1-L2

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6
Q

psoas minor is not present in ___ % of cadavers

A

40

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7
Q

action of psoas minor

A

lumbar stabilizer

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8
Q

iliacus origin, insertion, and innervation

A

o: iliac fossa and anterior sacroiliac ligaments
I: lesser trochanter
Inn: femoral nerve L2-L4

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9
Q

iliacus action

A

flexion the femur at the hip joint

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10
Q

what muscle is most proximal that receives femoral nerve branches

A

iliacus m

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11
Q

quadratus lumborum origin, insertion, and innervation

A

o: medial half of rib 12 and tips of lumbar TP’s
i: iliolumbar ligament and the iliac crest
Inn: ventral rami T12, L1-L4

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12
Q

action of quadratus lumborum

A

extension (bilateral), lateral flexion of the vertebral column, fixes 12th rib

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13
Q

subcostal, ilioinguinal, and iliohypogastric nerves cross this muscle diagonally leaving a C-referral shape

A

quadratus lumborum

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14
Q

the ____ crus is larger and longer and arises from the superior 3-4 lumbar vertebral bodies

A

right

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15
Q

the ____ crus arises from only the superior 2-3 vertebral bodies

A

left

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16
Q

centrally and posteriorly located between the crura is the ____ ligament

A

median arcuate

17
Q

the median arcuate ligament arches over the aorta and thoracic duct to form the

A

aortic hiatus (T12)

“I Eat Asparagus” 8.10.12

18
Q

runs diagonally across the QL and supplies the EAO and overlying skin

A

subcostal n (T12)

19
Q

passes anterior to QL to pierce the transverse abdominal muscle near the ASIS

A

iliohypogastric nerve

20
Q

sensory arc of the cremasteric reflex in males, sensory to the scrotum and labium majora

A

ilioinguinal n (L1)

21
Q

pierces and emerges from the anterior aspect of the psoas major, divides into femoral and genital branches (innervates motor cremasteric muscle)

A

genitofemoral n (L1-2)

22
Q

which nerve that runs across the QL does NOT meet the iliac crest

A

iliohypogastric n L1

23
Q

innervates the skin over the anterolateral thigh

A

lateral femoral cutaneous n L2-3

24
Q

which nerves runs thumbs width medial to ASIS

A

lateral femoral cutaneous n. (meralgia paresthetica)

25
Q

innervates the quadriceps

A

femoral n L2-4

26
Q

nerve that pierces the obturator membrane, sensory to the medial knee

A

obturator n L2-4

27
Q

passes over the sacral ala to the posterior pelvis to participate in the sacral plexus

A

lumbosacral trunk L4-5

28
Q

sympathetics of the posterior wall

A
  1. sympathetic chain
  2. pre gang
    2a. greater splanchnic T5-9: celiac gang
    2b. lesser splanchnic T10-11: superior mesenteric gang
    3b. least splanchnic T12: aorta plexus
29
Q

mixed plexi (4)

A
  1. intermesenteric
  2. superior hypogastric
  3. hypogastric
  4. inferior hypogastric
30
Q

what plexus lies in front of the upper part of the sacrum, just below the bifurcation of the aorta

A

superior hypogastric plexus

31
Q

plexus formed on each side at the front of the LOWER sacrum by the junction of the hypogastric and pelvic splanchnic nerves

A

inferior hypogastric plexus

32
Q

what are the 8 arteries off the abdominal aorta

A
  1. inferior phrenics
  2. celiac trunk
  3. suprarenal arteries (middle)
  4. renal arteries
  5. superior mesenteric artery
  6. gonadal arteries
  7. inferior mesenteric artery
  8. common iliac arteries
33
Q

at the bifurcation of the common iliac arteries, _______ artery gives off horizontal branches called the _____

A

median sacral artery

lumbar ima or 5th lumbar artery

34
Q

what are the 7 veins tributing to the posterior abdominal wall

A
  1. hepatic veins
  2. inferior phrenic veins
  3. renal veins
  4. common iliac veins
  5. gonadal veins
  6. lumbar veins
  7. median sacral vein
35
Q

the median sacral vein drains into

A

L common iliac vein

Viscera Lecture (11 decks)

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