Lower Extremity Muscle Innervations

Question 1

Pectineus

Answer 1

Femoral Nerve (L2, L3, L4) with occasional help from the Obturator Nerve

Question 2

Adductor Brevis

Answer 2

Obturator Nerve (L2, L3, L4)

Question 3

Adductor Longus

Answer 3

Obturator Nerve (L2, L3, L4)

Question 4

Adductor Magnus

Answer 4

Obturator Nerve, vertical hamstring portion innervated by tibial nerve (L2, L3, L4)

Question 5

Gracilis

Answer 5

Obturator Nerve (L2, L3, L4)

Question 6

Sartorius

Answer 6

Femoral Nerve (L2, L3, L4)

Question 7

Tensor Fascia Lata

Answer 7

Superior Gluteal Nerve (L4, L5, S1)

Question 8

Rectus Femoris

Answer 8

Muscular Branches of Femoral Nerve (L2, L3, L4)

Question 9

Vastus Intermedius

Answer 9

Muscular Brances of Femoral Nerve (L2, L3, L4)

Question 10

Vastus Medialis

Answer 10

Muscular Brances of Femoral Nerve (L2, L3, L4)

Question 11

Vastus Lateralis

Answer 11

Muscular Brances of Femoral Nerve (L2, L3, L4)

Question 12

Hamstrings (Biceps Femoris) Long Head

Answer 12

Tibial Nerve (L5, S1, S2)

Question 13

Hamstrings (Bicepts Femoris) Short Head

Answer 13

Common Peroneal Nerve (L5, S1, S2)

Question 14

Hamstrings (Semimembranosus)

Answer 14

Tibial Nerve (L5, S1, S2)

Question 15

Hamstrings (Semitendonosus)

Answer 15

Tibial Nerve (L5, S1, S2)

Question 16

Tibialis Anterior

Answer 16

Deep Peroneal Nerve (L4, L5, S1)

Question 17

Extensor Digitorum Longus

Answer 17

Deep Peroneal Nerve (L4, L5, S1)

Question 18

Extensor Hallucis Longus

Answer 18

Deep Peroneal Nerve (L4, L5, S1)

Question 19

Gastrocnemius

Answer 19

Tibial Nerve (S1, S2)

Question 20

Soleus

Answer 20

Tibial Nerve (S1, S2)

Question 21

Plantaris

Answer 21

Tibial Nerve (S1, S2)

Question 22

Tibialis Posterior

Answer 22

Tibial Nerve (L4, L5)

Question 23

Flexor Digitorum Longus

Answer 23

Tibial Nerve (S2, S3)

Question 24

Flexor Hallucis Longus

Answer 24

Tibial Nerve (S2, S3)

Question 25

Popliteus

Answer 25

Tibial Nerve (L4, L5, S1)

Question 26

Peroneus Tertius

Answer 26

Deep Peroneal Nerve (L5, S1)

Question 27

Peroneus Brevis

Answer 27

Superficial Peroneal Nerve (L5, S1, S2)

Question 28

Peroneus Longus

Answer 28

Superficial Peroneal Nerve (L5, S1, S2), additional help from common or deep peroneal nerve

Question 29

Extensor Digitorum Brevis

Answer 29

Deep Fibular Nerve (L5, S1)

Question 30

Extensor Hallucis Brevis

Answer 30

Deep Fibular Nerve (L5, S1)

Question 31

Abductor Hallucis

Answer 31

Medial Plantar Nerve (S2, S3)

Question 32

Flexor Digitorum Brevis

Answer 32

Medial Plantar Nerve (S2, S3)

Question 33

Abductor Digiti Minimi

Answer 33

Lateral Plantar Nerve (S2, S3)

Question 34

Quadratus Plantae

Answer 34

Lateral Plantar Nerve (S2, S3)

Question 35

Lumbricals

Answer 35

Medial: Medial Plantar Nerve (S2, S3) Lateral: Lateral Plantar Nerve (S2, S3)

Question 36

Flexor Hallucis Brevis

Answer 36

Medial Plantar Nerve (S2, S3)

Question 37

Adductor Hallucis

Answer 37

Deep branch of Lateral Plantar Nerve (S2, S3)

Question 38

Flexor Digiti Minimi Brevis

Answer 38

Superficial branch of Lateral Plantar Nerve (S2, S3)

Question 39

Plantar Interossei

Answer 39

Lateral Plantar Nerve (S2, S3)

Question 40

Dorsal Interossei

Answer 40

Lateral Plantar Nerve (S2, S3)