Nerves and Nerve Roots

Question 1

What nerve roots contribute to the formation of the femoral nerve?

Answer 1

L2-L4

Question 2

What nerve roots contribute to the formation of the lateral femoral cutaneous nerve?

Answer 2

L2-L3

Question 3

What nerve roots contribute to the formation of the anterior cutaneous nerve?

Answer 3

L2-L4

Question 4

What nerve roots contribute to the formation of the saphenous nerve?

Answer 4

L3-L4

Question 5

What nerve roots contribute to the formation of the cutaneous branch of the obturator nerve?

Answer 5

L2

Question 6

What nerve roots contribute to the formation of the obturator nerve?

Answer 6

L2-L4

Question 7

What nerve roots contribute to the formation of the sciatic nerve proper?

Answer 7

L4-S3

Question 8

What nerve roots contribute to the formation of the tibial division of the sciatic nerve/tibial nerve?

Answer 8

L4-S3

Question 9

What nerve roots contribute to the formation of the common fibular division of the sciatic nerve/common fibular nerve?

Answer 9

L4-S2

Question 10

What nerve roots are responsible for making the calcaneal tendon reflex?

Answer 10

S1-S2

Question 11

What nerve roots contribute to the formation of the superior gluteal nerve?

Answer 11

L4-S1

Question 12

What nerve roots contribute to the formation of the inferior gluteal nerve?

Answer 12

L5-S1

Question 13

What nerve roots contribute to the formation of the nerve to piriformis?

Answer 13

S1-S2

Question 14

What nerve roots contribute to the formation of the nerve to superior gemellus/obturator internus?

Answer 14

L5-S2

Question 15

What nerve roots contribute to the formation of the nerve to inferior gemellus/quadratus femoris?

Answer 15

L4-S1

Question 16

What nerve roots contribute to the formation of the pudendal nerve?

Answer 16

S2-S4

Question 17

What nerve roots contribute to the formation of the perforating cutaneous nerves?

Answer 17

S2-S4

Question 18

What nerve roots contribute to the formation of the posterior femoral cutaneous nerve?

Answer 18

S1-S3

Question 19

What nerve roots contribute to the formation of the superior cluneal nerve?

Answer 19

L1-L3 dorsal rami

Question 20

What nerve roots contribute to the formation of the medial cluneal nerve?

Answer 20

S1-S3 dorsal rami

Question 21

What nerve roots contribute to the formation of the inferior cluneal nerve?

Answer 21

S1-S3 ventral rami

Question 22

What nerves form the sural nerve and what nerve do those branches arise from?

Answer 22

Sural = medial sural and lateral sural cutaneous (via sural communicating branch from lateral sural cutaneous).
Medial sural from tibial nerve.
Lateral sural from common fibular nerve.

Question 23

What area of skin does the sural nerve supply?

Answer 23

Posterolateral distal half of leg and lateral foot

Question 24

What area of skin does the saphenous nerve supply?

Answer 24

Anteromedial leg and proximal medial foot

Question 25

What area of skin does the superficial fibular nerve supply?

Answer 25

Lateral leg and dorsum of foot and digits

Question 26

What area of skin does the deep fibular nerve supply?

Answer 26

“Flip-Flop” region

Question 27

What area of skin does the dorsal cutaneous nerve supply?

Answer 27

Lateral foot

Question 28

What area of skin does the lateral plantar nerve supply and what are the nerve roots contributing to it?

Answer 28

Lateral plantar foot

S1-S2

Question 29

What area of skin does the medial plantar nerve supply and what are the nerve roots contributing to it?

Answer 29

Medial plantar foot

L4-L5

Question 30

What area of skin does the posterior femoral cutaneous nerve supply?

Answer 30

Posterior thigh and popliteal fossa

Question 31

What nerve roots contribute to the formation of the superficial fibular nerve?

Answer 31

L4-S1

Question 32

What nerve roots contribute to the formation of the deep fibular nerve?

Answer 32

L5

Question 33

What nerve roots contribute to the formation of the sural nerve?

Answer 33

S1-S2

Question 34

What area of skin does the superior cluneal nerve supply?

Answer 34

Superior and central buttocks

Question 35

What area of skin does the medial cluneal nerve supply?

Answer 35

Medial buttocks and intergluteal cleft

Question 36

What area of skin does the inferior cluneal nerve supply?

Answer 36

Inferior buttocks