Exam I Nerve Innervations

Question 1

Suboccipital nerve (C1)

Answer 1

Rectus capitis posterior major + minor, obliquis capitis superior + inferior

Question 2

Phrenic nerve (C3, C4, C5)

Answer 2

Diaphragm

Question 3

Dorsal scapular nerve (C4, C5)

Answer 3

Levator scapulae, rhomboid major + minor

Question 4

Suprascapular nerve (C4, C5, C6)

Suprascapular nerve (C5, C6)

Answer 4

Supraspinatus

Infraspinatus

Question 5

Axillary Nerve (C5, C6)

Answer 5

Deltoid, teres minor

Question 6

Lower subscapular nerve (C5, C6)

Answer 6

Subscapularis, Teres major

Question 7

Upper subscapular nerve (C5, C6, C7)

Answer 7

Subscapularis

Question 8

Long thoracic nerve ( C5, C6, C7)

Answer 8

Serratus anterior

Question 9

Lateral pectoral nerve (C5, C6, C7)

Answer 9

Pectoralis Major

Question 10

Thoracodorsal nerve (C6, C7, C8)

Answer 10

Latissimus dorsi

Question 11

Medial pectoral nerve (C8, T1)

Answer 11

Pectoralis major and minor

Question 12

Thoraco-abdominal nerves ( ventral rami T6-T12)

Answer 12

Rectus abdominis, external oblique (T7-T11), internal oblique, transverse abdominis

Question 13

Femoral nerve (L2, L3, L4)

Answer 13

Iliacus

Question 14

Pudendal nerve (S2, S3, S4)

Answer 14

Ischiocavernosus, bulbospongiosus, superficial transverse perineal, external anal sphincter, levator ani, coccygeus, and the rest of the pelvic floor muscles

Question 15

Facial nerve (CN XII)

Answer 15

Platysma

Question 16

Spinal accessory nerve (CN XI)

Answer 16

Trapezius, sternocleidomastoid

Question 17

Thoracic-segmental intercostal nerve

Answer 17

Intercostals

Question 18

Subcostal nerve

Answer 18

External oblique

Question 19

First lumbar nerve

Answer 19

Internal oblique, transverse abdominis

Question 20

Dorsal rami of spinal nerves

Answer 20

Splenius, erector spinae group, transversospinalis group

Question 21

Ventral rami (C3, C4)

Answer 21

Trapezius, sterocleidomastoid, levator scapulae

Question 22

Ventral branches (T12, L1-L4)

Answer 22

Quadratus lumborum

Question 23

Ventral rami L1, L2, L3

Answer 23

Psoas major