Peripheral Anesthesia-Lower Blocks NERVES

Question 1

Lumbosacral plexus =

Answer 1

L1-S5 (may include T12)

Question 2

Lumbosacral plexus innervates ___ and ___

Answer 2

Lower abdomen and lower extremities

Question 3

Femoral nerve originates from ___

Answer 3

L2-L4

Question 4

Femoral nerve divides into multiple branches—splits into ___ and ___ branches below the inguinal ligament

Answer 4

Anterior and posterior branches

Question 5

Posterior branch of the femoral nerve contains ___ nerve

Answer 5

Saphenous

Question 6

Femoral nerve is located at ___, lateral to femoral ___ and ___

Answer 6

Located at femoral crease; lateral to femoral artery and vein

Question 7

From lateral-medial—NAVEL

Answer 7

Nerve, artery, vein, empty space, ligament

Question 8

Saphenous nerve is the posterior branch of the ___ nerve

Answer 8

Femoral

Question 9

Stimulation of the saphenous nerve causes ___ muscle contraction (band like across thigh) and ___ twitch (snap)

Answer 9

Sartorious muscle contraction; patellar twitch

Question 10

Sciatic nerve is formed by junction of what two nerves?

Answer 10

Tibial nerve and common peroneal nerve—these are distinct nerves beginning in the same sheath

Question 11

Sciatic nerve innervates ___ (extension) and ___ (flexion)

Answer 11

Hip and knee

Question 12

Sciatic nerve descends the popliteal fossa where it splits into ___ and ___ nerves

Answer 12

Tibial and common peroneal nerves