Posterior abdominal wall

Question 1

Attachments of quadratus lumborum

Answer 1

12th rib and transverse processes of L1-4
to
iliac crest

Question 2

action of quadratus lumborum

Answer 2

lateral flexion
and
support of abdominal wall
and
forced expiration (bilateral use)

Question 3

Innervation of quadratus lumborum

Answer 3

T12 - l4 ant rami

Question 4

attachments of iliacus

Answer 4

iliac fossa of pelvis
joins w/ psoas - iliopsoas
lesser trochanter of femur

Question 5

innervation of iliacus

Answer 5

femoral nerve

Question 6

actions of psoas

Answer 6

hip flexion
lateral bending of trunk (one)
raise trunk from supine (both)

Question 7

innervation of psoas

Answer 7

lumbar plexus - direct branches from L2-4

Question 8

what is the link between psoas and diaphragm

Answer 8

the fascia over the psoas is thickened near the diaphragm to form the medial arcuate ligament

Question 9

attachment levels of right and left crus

Answer 9

right - bodies of L1-3
left - bodies of L1-2

Question 10

at which level does the IVC form

Answer 10

L5 - left and right common iliac veins unite

Question 11

which structures does the IVC drain

Answer 11

posterior abdominal wall, diaphragm, kidneys, and suprarenal glands

Question 12

describe the common arrangement of lumbar vein drainage

Answer 12

1&2 into ascending lumbar
3&4 into IVC
5th into iliolumbar vein

Question 13

Describe the difference between right and left gonadal vein drainage

Answer 13

right - direct to IVC
left - left renal vein

Question 14

What are the nerve roots of the pelvic splanchnic nerves

Answer 14

S2,S3,S4

Question 15

where is the superior hypogastric plexus found

Answer 15

around the bifurcation of aorta

Question 16

where are the inferior hypogastric plexuses found

Answer 16

lateral pelvic walls

Question 17

name the nerves if the lumbar plexus from superior to inferior

Answer 17

iliohypogastric
ilioinguinal
genitofemoral
lateral femoral cutaneous
femoral
obturator

Question 18

what structures does ilioinguinal innervate

Answer 18

internal oblique and transversus abdominis (w/ iliohypogatsric)
cutaneous to medial thigh, perineum
and
root of penis/scrotum in males
mons pubis/labium majus in females

Question 19

what nerve roots is genitofemoral derived from

Answer 19

L1, L2

Question 20

what does the femoral branch of genitofemoral innervate

Answer 20

sensory to superoanterior aspect of thigh

Question 21

what does the genital branch of genitofemoral innervate

Answer 21

sensory to perineum
motor to cremasteric muscle

Question 22

Nerve roots of lateral cutaneous nerve of the thigh

Answer 22

L2 and L3

Question 23

what is the saphenous nerve a branch of and what does it supply

Answer 23

femoral nerve
branch to medial side of leg (sensory)