Lower Limb Innervation

Question 1

Bones involved in the pelvic girdle

Answer 1

Hip bone/coxa/coxae

Question 2

Anterior and posterior sides of the patella

Answer 2

Anterior surface

Articular surface

Question 3

On the first metatarsal, what two bones are on the plantar surface?

Answer 3

Medial sesamoid bone

Lateral sesamoid bone

Question 4

Lumbar plexus involves ventral rami of:

Answer 4

L1-L4

Question 5

Sacral plexus involves ventral rami of:

Answer 5

L4-S4

Question 6

Part of L4 ventral ramus and all of L5 ventral ramus join to form the:

And this assists in forming the:

Answer 6

Lumbosacral trunk

Sacral plexus

Question 7

Nerve that innervates anterior thigh muscles, and cutaneous to anterior and medial sides of the thigh leg and foot

Answer 7

Femoral nerve

L2-L4

Question 8

Innervates medial thigh muscles, and cutaneous to medial thigh

Answer 8

Obturator nerve

L2-L4

Question 9

Branches of sacral plexus

Answer 9

Superior gluteal
Inferior gluteal
Posterior cutaneous nerve of the thigh
Nerve to piriformis muscle
Nerve to quadratus femoris muscle
Nerve to obturator internus muscle
Pudendal nerve
Sciatic nerve

Question 10

Innervates posterior thigh, all leg, foot muscles, and cutaneous to leg

Answer 10

Sciatic Nerve

Part of sacral plexus

L4-S3

Question 11

Femoral nerve, artery, vein, all run along the:

Answer 11

Anterior side of the thigh

Question 12

Innervates anterior thigh muscles and cutaneous to anterior and medial sides of the knee, leg, and foot

Answer 12

Femoral nerve

Question 13

Femoral nerve contains fibers from ventral rami of:

Answer 13

L2-L4

Divides into several branches about 4 cm inferior to inguinal ligament

Question 14

Termination of femoral nerve

Innervates skin of anteromedial knee, leg, foot

Answer 14

Saphenous nerve

Question 15

Innervates medial thigh muscles, and cutaneous to medial thigh

Answer 15

Obturator nerve

Question 16

Obturator nerve contains fibers from ventral rami of:

Answer 16

L2-L4

Question 17

Sciatic nerve contains fibers from ventral rami of:

Answer 17

L4-S3

Question 18

Sciatic nerve is what 2 nerves bound together? Where does this division occur?

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Answer 18

Tibial nerve and common fibular nerve

Just superior to the popliteal fossa

Question 19

Tibial nerve

Answer 19

Arises from ventral rami L4-S3

Innervate muscles of posterior thigh, posterior leg, and sole of foot

Question 20

Common fibular nerve

Answer 20

Arises from ventral rami of L4-S2

Innervates posterior thigh, lateral and anterior leg, dorsum of the foot