CHAPTER 53 HANDOUT

Question 1

lumbar plexus nerves
femoral nerve
-ventral rami:
-_____, _____, _____ division of _____

key features

• it emerges lateral to the _____ muscle
• supplies _____ muscles
• gives off _____ nerve that supplies _____ and _____

Answer 1

L2
L3
upper
L4
psoas major 
anterior 
saphenous nerve 
medial leg
foot

Question 2

lumbar plexus nerves 
obturator nerve 
ventral rami:
-\_\_\_\_\_, \_\_\_\_\_, \_\_\_\_\_ division of \_\_\_\_\_
-primarily supplies the \_\_\_\_\_

Answer 2

L2
L3
upper
L4
medial thigh

Question 3

sacral plexus nerves
sciatic nerve
-ventral rami:
-_____ division of _____, _____, _____, _____, _____

key features:

• _____ nerve in the body
• two branches: _____ and _____ (_____)
• tibial supplies all _____ leg muscles
• deep fibular supplies _____ leg muscles
• superficial fibular supplies _____ leg muscles

Answer 3

lower
L4
L5
S1
S2
S3
largest
tibial nerve 
common fibular (peroneal) nerve 
posterior
anterior 
lateral

Question 4

sacral plexus nerves
superior gluteal nerve
-ventral rami:
-_____ division of _____, _____, _____

key features
-innervates muscle _____, _____, and _____

Answer 4

lower
L4
L5
S1
gluteus medius 
gluteus minimus 
TFL tensor fasciae latae

Question 5

sacral plexus nerves
inferior gluteal nerve
-ventral rami:
-_____-_____

key features
-innervates the _____ muscle

Answer 5

L5-S2

gluteus maximus

Question 6

sacral plexus nerves
nerve to quadratus femoris and inferior Gemellus
-ventral rami:
-_____ division of _____, _____, _____

Answer 6

lower
L4
L5
S1

Question 7

sacral plexus nerves
nerve to obturator internus and superior gemellus
-ventral rami:
-_____, _____, _____

Answer 7

L5
S1
S2

Question 8

sacral plexus nerves
nerve to piriformis
-ventral rami:
-_____

Answer 8

S2

Question 9

lumbar sacral plexus
PFC: posterior femoral cutaneous nerve
-ventral rami:
-_____-_____

-supplies skin of the _____

Answer 9

S1-S3

posterior thigh

Question 10

lumbar sacral plexus 
pudendal nerve 
-ventral rami:
-\_\_\_\_\_, \_\_\_\_\_, \_\_\_\_\_
-supplies \_\_\_\_\_, lower \_\_\_\_\_

Answer 10

S2
S3
S4
genitalia
rectum

Question 11

lumbar plexus

• found on _____ wall, derived from ventral rami _____ _____ division
• generally speaking, supplies _____, _____, and _____

Answer 11

posterior abdominal 
L1-L4
upper
lateral
anterior 
medial thigh

Question 12

sacral plexus

• found on _____ wall, derived from ventral rami _____
• generally speaking supplies _____ region, _____, the _____ and _____

Answer 12

lateral pelvis 
L4 lower-S4
gluteal 
posterior thigh
leg
foot