Chaper 6 - LE MMT Innervations

Question 1

hip flexion

Answer 1

femoral n. (L2-L4) ==> psoas major

femoral n. (L2-L3) ==> iliacus

Question 2

hip flexion, abduction, and external rotation w/ knee flexion

Answer 2

femoral n. (L2-L3) ==> sartorius

Question 3

hip extension

Answer 3

I gluteal n. (L5-S2) ==> gluteus maximus

sciatic n., tibial part (L5-S2) ==> semimembranosus; semitendinosus; long head of biceps femoris

Question 4

hip extension w/ knee bent

Answer 4

I gluteal n. (L5-S2) ==> gluteus maximus

ISOLATES GLUTE MAX

Question 5

hip abduction

Answer 5

S gluteal n. (L4-S1) ==> gluteus medius; gluteus minimus

Question 6

hip abduction from flexed position

Answer 6

S gluteal n. (L4-S1) ==> tensor fasciae latae

Question 7

hip adduction

Answer 7

femoral n. (L2-L3) ==> pectineus
obturator n., A branch (L2-L4) ==> adductor magnus
obturator n., P branch (L2-L4 ==> adductor longus; adductor brevis; pectineus
obturator n., P branch (L3-L4) ==> gracilis

Question 8

hip external rotation

Answer 8

obturator n. (L3-L4) ==> obturator externus
n. to piriformis (S1-S2) ==> piriformis
n. to quadratus femoris (L5-S1) ==> quadratus femoris; I gemellus
n. to obturator internus (L5-S1) ==> obturator internus; S gemellus
I gluteal n. (L5-S2) ==> gluteus maximus (P)

Question 9

hip internal rotation

Answer 9

S gluteal n. (L4-S1) ==> gluteus medius; gluteus minimus; TFL

Question 10

knee flexion

Answer 10

tibial n. (L5-S2) ==> semimembranosus; semitendinosus; long head of biceps femoris
common peronal/fibular n. (sciatic n.) (L5-S2) ==> short head of biceps femoris

Question 11

knee extension

Answer 11

femoral n. (L2-L4) ==> quadriceps femoris - vastus lateralis, medialis (long and oblique heads), intermedius, rectus femoris

Question 12

ankle plantarflexion

Answer 12

tibial n. (S1-S2) ==> gastrocnemius; soleus (triceps surae)

Question 13

foot dorsiflexion and inversion

Answer 13

deep peronal/fibular n. (L4-S1) ==> tibialis A

Question 14

foot inversion

Answer 14

tibial (M popliteal) n. (L4-L5/S1) ==> tibialis P

Question 15

foot eversion w/ plantarflexion

Answer 15

superficial peroneal/fibular n. (L5-S1) ==> fibularis longus; fibularis brevis

Question 16

hallux and toe MTP flexion

Answer 16

L plantar n. (S2-S3) ==> 2nd-4th lumbricals
M plantar n. (S1-S2) ==> flexor hallucis brevis
M plantar n. (L5-S1) ==> 1st lumbrical

Question 17

hallux and toe DIP and PIP flexion

Answer 17

tibial n. (L5-S2) ==> flexor digitorum longus; flexor hallucis longus
M plantar n. (S1-S2) ==> flexor digitorum brevis

Question 18

hallux and toe MP and IP extension

Answer 18

deep peroneal/fibular n. (L5-S1) ==> extensor digitorum longus; extensor digitorum brevis
deep peroneal/fibular n. (L5) ==> extensor hallucis longus