Muscle Innervation/Perfusion

Question 1

External Intercostal

Answer 1

N: Intercostal n.
B: Ant/Post Intercostal a.

Question 2

Diaphragm

Answer 2

N: Phrenic n.
B: Musculophrenic, inf phrenic, subcostal, lower post intercostal a.

Question 3

Cremaster

Answer 3

N: Genitofemoral
B: Cremasteric a.

Question 4

External Oblique

Answer 4

N: Ventral Rami T7-T12
B: Inf/Sup Epigastric, Lumbar, Subcostal, Lower Post Intercostal, Deep Circumflex Iliac

Question 5

Internal Intercostal

Answer 5

N: Intercostal n.
B: Ant/Post Intercostal a

Question 6

Quadratus Lumborum

Answer 6

N: Ventral Rami T12-L3
B: Subcostal, Lumbar, Iliolumbar a.

Question 7

Transversus thoracis

Answer 7

N: Intercostal n.
B: Internal thoracic, ant intercostal

Question 8

Transversus abdominis

Answer 8

N: Lower Thoracic Ventral Rami L1
B: Inf/Sup Epigastric, subcostal, lumbar, deep circumflex iliac, lower post intercostal a.

Question 9

Levator Ani

Answer 9

N: pudendal n. (inf rectal br) and S4
B: Inf Gluteal, Inf rectal, internal pudendal, inferior vesicle

Question 10

Internal Oblique

Answer 10

N: Lower Thoracic and Ventral Rami L1
B: Inf/Sup Epigastric, lumbar, subcostal, lower post intercostal, Deep Circumflex Iliac a

Question 11

Rectus Abdominis

Answer 11

N: Lower Thoracic Ventral Rami
B: Sup/Inf Epigastric

Question 12

Coccygeus

Answer 12

N: Ventral Rami S4-5
B: Inferior Gluteal, Inferior Rectal, Int Pudendal a

Question 13

Iliacus

Answer 13

N: Femoral n. and lumbar plexus branch
B: Femoral, Obturator, Iliolumbar, Deep Circumflex Femoral a.

Question 14

Psoas

Answer 14

N: Ventral Rami L1-3
B: Femoral, Obturator, iliolumbar, lumbar

Question 15

Obturator Internus

Answer 15

N: Nerve to Obturator Internus
B: Obturator and Int Pudendal a

Question 16

Piriformis

Answer 16

N: Branches of the Lumbosacral Plexus
B: lateral sacrals, superior gluteal, int pudendal

Question 17

Muscles of the Perineum except Sphincter Ani Externus

Answer 17

N: Perineal Branch of Pudendal n.
B: Internal Pudendal a

Question 18

Sphincter Ani Externus

Answer 18

N: Inferior Rectal branch of the Pudendal n.
B: internal pudendal a.