Abdominals and Respiratory Muscles: Innervation

Question 1

Innervation

1. Diaphragm
2. Levatores costarum (12)
3. Serratus posterior superior
4. Serratus posterior inferior

A. Intercostal nerve
B. Phrenic nerve
C. Posterior rami of thoracic spinal nerves

Answer 1

1. B. Phrenic nerve
2. C. Posterior rami of thoracic spinal nerves
3. A. Intercostal nerve
4. A. Intercostal nerve

Question 2

TRUE OR FALSE: Each intercostal muscle is innervated by their own nerves.

Answer 2

True

Question 3

Nerve supply: Lower 6 thoracic nerves
A. External Oblique
B. Internal Oblique
C. Rectus Abdominis
D. Transversus Abdominis

Answer 3

C. Rectus Abdominis

Question 4

Nerve supply: Lower 6 thoracic nerves and iliohypogastric and ilioinguinal nerves (L1)
A. External Oblique
B. Internal Oblique
C. Rectus Abdominis
D. Transversus Abdominis

Answer 4

A. External Oblique, B. Internal Oblique, and D. Transversus Abdominis

Question 5

Nerve supply: 12th thoracic nerve
A. Psoas
B. Iliacus
C. Quadratus Lumborum
D. Pyramidalis

Answer 5

D. Pyramidalis

Question 6

Nerve supply: Femoral nerve
A. Psoas
B. Iliacus
C. Quadratus Lumborum
D. Pyramidalis

Answer 6

B. Iliacus

Question 7

Nerve supply: Lumbar plexus
A. Psoas
B. Iliacus
C. Quadratus Lumborum
D. Pyramidalis

Answer 7

A. Psoas and C. Quadratus Lumborum