Posterior abdominal wall

Question 1

What is the innervation of the diaphragm?

Answer 1

C3 4 5 keeps the diaphragm a live

Question 2

What is the most posterior muscle of the posterior abdominal wall?

Answer 2

Quadratus lumborum

Question 3

What are the insertion points of the quadratus lumborum?

Answer 3

Iliac crest to last 4 lumbar vertebrae, to costal margin

Question 4

What is the innervation of quadratus lumborum?

Answer 4

T12 -L4

Question 5

What are the insertion points of psoas major?

Answer 5

From transverse processes of Lumbar vertebrae 1-5 to anterior surface of the ilius, over the ilopubic eminence to the lesser trochanter of the femur

Question 6

What is the nerve supply to the psoas muscle?

Answer 6

L1-L3

Question 7

Role of psoas major muscle?

Answer 7

Hip flexion

Question 8

Where does the psoas minor insert?

Answer 8

Anterior to psoas major it runs from T12 and L1 to the iliopubic eminence

Question 9

Where does iliacus insert?

Answer 9

Iliac fossa on the internal surface of the iliac bone, it runs over the iliopubic eminence, lateral and posterior to the psoas muscle to join the tendon of the psoas major muscle which inserts into the less trochanter of the femur

Question 10

What proportion of people have no psoas minor?

Answer 10

40%

Question 11

What is the innervation of the iliacus?

Answer 11

Femoral nerve