Thigh/Leg

Question 1

Iliopsoas (Iliacus and psoas major)

Answer 1

Femoral Nerve (L2, L3)

Thigh Flexion

Question 2

Pectineus

Answer 2

Femoral Nerve L2 L3

Thigh Flexion

Thigh adduction

Question 3

Sartorius

Answer 3

Femoral Nerve L2 L3

Thigh flexion, external rotation, abduction

Question 4

Rectus Femoris

Answer 4

Femoral Nerve L2, L3, L4

Thigh Flexion, Knee extension

Question 5

Vastus Medialis

Answer 5

Femoral Nerve L2 L3 L4

Leg extension at knee

Question 6

Vastus Intermedius

Answer 6

Femoral Nerve L2, L3, L4

Leg extension at knee

Question 7

Vastus Lateralis

Answer 7

Femoral Nerve L2, L3, L4

Leg extension at Knee

Question 8

Articularis Genu

Answer 8

Femoral Nerve L2, L3, L4

Aids in knee extension by elevating synovial capsule

Question 9

Pectineus

Answer 9

Femoral Nerve L2, L3

Thigh adduction
Thigh flexion

Question 10

Gracilis

Answer 10

Obturator Nerve (anterior branch) L2, L3

Thigh adduction
Thigh flexion

Question 11

Adductor Longus

Answer 11

Obturator Nerve (anterior branch) L2, L3, L4

Thigh adduction
Thigh flexion

Question 12

Adductor Brevis

Answer 12

Obturator Nerve (anterior branch) L2, L3, L4

Thigh adduction
Thigh flexion

Question 13

Adductor Magnus (2 heads)

Answer 13

Medial Head: Obturator Nerve (posterior branch) L2, L3, L4

• thigh adduction
• thigh flexion

Lateral Head: Tibial division of Sciatic L4, L5, S1, S2

• thigh adduction
• thigh extension

Question 14

Obturator Externus

Answer 14

Obturator Nerve (posterior branch) L3, L4

Thigh external rotation

Question 15

Biceps Femoris (2 heads)

Answer 15

Long Head: Tibial division of Sciatic L5, S1, S2
-Leg flexion
-leg external rotation
-thigh extension
Short Head: Common Fibular division of sciatic L5, S1, S2
-leg flexion
-leg external rotation

Question 16

Semimembranosus

Answer 16

Tibial division of sciatic L5, S1, S2

Leg flexion
Leg internal rotation
Thigh extension

Question 17

Semitendinosus

Answer 17

Tibial division of sciatic L5, S1, S2

Leg Flexion
Leg internal rotation
Thigh extension

Question 18

Plantaris

Answer 18

Tibial Nerve S1 S2

Plantarflexion

Question 19

Gastrocnemius

Answer 19

Tibial Nerve S1, S2

Plantarflexion

Question 20

Soleus

Answer 20

Tibial Nerve S1, S2

Plantarflexion

Question 21

Popliteus

Answer 21

Tibial Nerve L4, L5, S1

Initiates knee flexion

Question 22

Tibialis Posterior

Answer 22

Tibial Nerve L4, L5

Inversion

Plantarflexion

Question 23

Flexor digitorum Longus

Answer 23

Tibial Nerve S2, S3

Toe flexion (2-5)

Plantarflexion

Question 24

Flexor Hallucis Longus

Answer 24

Tibial Nerve (S2, S3)

Big toe flexion

Plantarflexion

Question 25

Tibialis Anterior

Answer 25

Deep Fibular Nerve L4, L5 Dorsiflexion

Question 26

Extensor Digitorum Longus

Answer 26

Deep Fibular L5, S1 ``` Toe Extension (2-5) Dorsiflexion ```

Question 27

Fibularus Tertius

Answer 27

Deep Fibular L5, S1 Eversion Dorsiflexion

Question 28

Extensor Hallucis Longus

Answer 28

Deep Fibular Nerve L5, S1 Big toe extension Dorsiflexion

Question 29

Fibularis Longus

Answer 29

Superficial Fibular nerve L5, S1, S2 Eversion Plantarflexion

Question 30

Fibularis Brevis

Answer 30

Superficial Fibular L5, S1, S2 Eversion Plantarflexion