Muscular Innervation

Question 1

Dorsal scapular n.

Answer 1

Rhomboids (C4, 5)

Levator scapulae (C3, 4, 5)

C3, 4, 5

Question 2

Long thoracic n.

Answer 2

Serratus anterior

C5, 6, 7, (8)

Question 3

Nerve to subclavius

Answer 3

Subclavius

C5, 6

Question 4

Suprascapular n.

Answer 4

Infraspinatus

Supraspinatus

C4, 5, 6

Question 5

Lateral pectoral n.

Answer 5

Pectoralis major (clavicular head)

C5, 6, 7

Question 6

Musculocutaneous n.

Answer 6

Coracobrachialis (C6, 7)

Biceps brachii (C5, 6)

Brachialis (C5, 6)

C5, 6, 7

Question 7

Lateral root of the median n.

Answer 7

Flexor muscles in the forearm, except flexor carpi ulnaris, and five muscles in the hand

C6, 7, 8, T1

Question 8

Medial pectoral n.

Answer 8

Pectoralis major

Pectoralis minor

C(6), 7, 8 T1

Question 9

Ulnar n.

Answer 9

Flexor carpi ulnaris

Flexor digitorum profundus

Most small muscles of the hand

C8, T1

Question 10

Medial root of the median n.

Answer 10

Flexor muscles in the forearm, except flexor carpi ulnaris, and five muscles of the hand

C6, 7, 8, T1

Question 11

Upper subscapular n.

Answer 11

Subscapularis

C5, 6, 7

Question 12

Thoracodorsal n.

Answer 12

Latissimus dorsi

C6, 7, 8

Question 13

Lower subscapular n.

Answer 13

Subscapularis

Teres major

C5, 6, 7

Question 14

Axillary n.

Answer 14

Deltoid

Teres minor

C5, 6

Question 15

Radial n.

Answer 15

Brachioradialis

Triceps

Supinator

Wrist extensors

Anconeus

C5, 6, 7, 8, T1

Question 16

Lumbar plexus

Answer 16

Psoas major

Psoas minor

Quadratus lumborum

T(12), L1, 2, 3, 4

Question 17

Sacral plexus

Answer 17

Piriformis

Superior gemelli

Inferior gemelli

Obturator internus

Quadratus femoris

L4, 5, S1, 2, 3

Question 18

Inferior gluteal n.

Answer 18

Gluteus maximus

L5, S1, 2

Question 19

Superior gluteal n.

Answer 19

Gluteus medius

Gluteus minimus

Tensor fasciae latae

L4, 5, S1

Question 20

Femoral n.

Answer 20

Vastus lateralis

Rectus femoris

Vastus medialis

Vastus intermedius

Illiacus

Sartorius

Pectineus

L(1), 2, 3, 4

Question 21

Obturator n.

Answer 21

Adductor longus

Adductor brevis

Adductor magnus

Obturator externus

Gracilis

L(1), 2, 3, 4

Question 22

Sciatic n. (Tibial division)

Answer 22

Semitendinosus

Semimembranosus

Biceps femoris (long head)

L4, 5, S1, 2, 3

Question 23

Sciatic n. (Common peroneal division)

Answer 23

Biceps femoris (short head)

L4, 5, S1, 2

Question 24

Tibial n.

Answer 24

Soleus (L5, S1, 2)

Popliteus (L4, 5, S1)

Plantaris (L4, 5, S1, (2))

Tibialis posterior (L(4), 5, S1)

Grastrocnemius (S1, 2)

Flexor hallucis longus (L5, S1, 2)

Flexor digitorum longus (L5, S1, (2))

L4, 5, S1, 2

Question 25

Deep peroneal n.

Answer 25

Tibialis anterior Extensor digitorum longus Extensor digitorum brevis Extensor hallucis longus Peroneus tertius L4, 5, S1

Question 26

Superficial peroneal n.

Answer 26

Peroneus longus Peroneus brevis L4, 5, S1

Question 27

Medial plantar n.

Answer 27

Abductor hallucis Lumbrical I Flexor digitorum brevis Flexor hallucis brevis L4, 5, S1

Question 28

Lateral plantar n.

Answer 28

Abductor digiti minimi (S1, 2) Flexor digiti minimi (S1, 2) Opponens digiti minimi (S1, 2) Dorsal interossei (S1, 2) Quadratus plantae (S1, 2) Adductor hallucis (S1, 2) Lumbrical II, III, IV (L(4), (5), S1, 2) Plantar interossei (S1, 2) L(4), (5), S1, 2