nerve groupings - exam 3

Question 1

anterior thigh muscles

Answer 1

• pectineus
• sartorius

Question 2

anterior thigh muscle innervations?

Answer 2

pectineus and sartorius:
femoral nerve L2-L3
pectineus: may receive a branch from obturator nerve

Question 3

list the glute muscles

Answer 3

• glute maximus
• glute medius
• glute minimis
• tensor fascia latae

Question 4

glute muscle nerve innervations

Answer 4

glute maximus: inferior gluteal nerve L5,S1,S2
glute med,min, TFL: superior gluteal nerve L4,L5,S1

Question 5

list the deep gluteal muscles

Answer 5

• piriformis
• obturator internus
• sup gemelli
• inferior gemelli
• quadratus femoris

Question 6

list the deep gluteal nerve innervations + spinal levels

Answer 6

piriformis: branches of anterior rami S1 + S2
obturator internus & superior gemelli: nerve to obturator internus L5,S1
inferior gemelli & quadratus femoris: nerve to quadratus femoris L5,S1

Question 7

list the medial thigh [adductors]

Answer 7

• adductor brevis
• adductor longus
• adductor magnus
• gracilis
• obturator externus

Question 8

innervation of adductors [medial thigh]

Answer 8

• adductor brev, long, magnus [add. part]: obturator nerve L2,L3,L4
• gracilis: obturator nerve: L2,L3
• obturator externus: L3,L4
• adductor hamstrings: tibial division of sciatic nerve L4

Question 9

list the anterior thigh muscles, aka…

Answer 9

aka…quadriceps group
- rectus femoris
- vastus lateralis
- vastus intermedius
- vastus medialis

Question 10

anterior thigh muscles [quadriceps] nerve innervations

Answer 10

femoral nerve L2,L3,L4

Question 11

list the posterior thigh muscles, aka…

Answer 11

hamstrings
- biceps femoris
- semimembranosus
- semitendinosus

Question 12

list the posterior thigh muscles innervations

Answer 12

• biceps femoris short head: common fibular division of sciatic nerve L5,S1,S2
• biceps femoris long head, semiten, semimem: tibial division of sciatic nerve L5,S1, S2

Question 13

list the lateral lower leg muscles

Answer 13

• fibularis brevis
• fibularis longus

Question 14

lateral lower leg muscles innervations

Answer 14

fibularis longus and brevis: superficial fibular nerve
L5,S1,S2

Question 15

list the anterior lower leg muscles

Answer 15

• tibialis anterior
• extensor hallucis longus
• extensor digitorum longus
• fibularis tertius

Question 16

list the anterior lower leg muscles nerve innervations

Answer 16

• tibialis anterior: deep fibular nerve L4,L5
• fibularis tertius, ext hallucis + digitorum longus: deep fibular nerve L5,S1

Question 17

posterior lower leg - superficial muscles

Answer 17

• gastrocnemius
• soleus
• plantaris

Question 18

posterior lower leg - superficial muscles nerve innervations

Answer 18

[gastrocnemius, soleus, plantaris] tibial nerve S1,S2

Question 19

list the posterior lower leg - deep layer muscles

Answer 19

• popliteus
• flexor hallucis longus
• flexor digitorum longus
• tibialis posterior

Question 20

list the posterior lower leg - deep layer muscle innervations

Answer 20

all are tibial nerve, different spinal levels smh
- popliteus: TN L4,L5,S1
- flexor digitorum and hallucis: S2, S3
- tibialis posterior: L4,L5

Question 21

austin area code nervees

Answer 21

tibial nerve L5,S1,S2 [hamstrings]
superficial fibular nerve L5,S1,S2 [fibularis brevis and longus]
inferior gluteal nerve L5,S1,S2 [gluteus maximus]