nerves

Question 1

sacral plexus gives which nerve

Answer 1

sciatic nerve

Question 2

sacral plexus is formed from anterior rami off______?

Answer 2

Spinal nerves L4-L5 and S1-S4

Question 3

lumbar plexus made up from anterior rami off_____?

Answer 3

spinal nerves L1-L4

Question 4

lumbar plexus gives which nerves?

Answer 4

1. iliophyogastric nerve (L1)
2. ilioinguinal nerve (L1)
3. genitofemoral nerve (L1-L2)
4. lateral cutaneous nerve of thigh (L2-L3)
5. femoral nerve (L2-L4)
6. obturator nerve (L2-L4)

Question 5

iliohypogastric nerve level & supply

Answer 5

L1
abdominal muscles
skin overlying iliac crest
hypogastric region

Question 6

ilioinguinal nerve level & supply

Answer 6

L1
abdominal muscles
skin of genital region
skin of medial thigh region

Question 7

genitofemoral nerve nerve level & supply

Answer 7

L1-L2
femoral branch: skin on anterior surface of thigh
genital branch: cremaster muscle
skin of genitals

Question 8

where does genitofemoral branch travel?

Answer 8

pierces deep ring.
travels in deep inguinal ring & inguinal canal WITHIN spermatic cord

Question 9

lateral cutaneous nerve of thigh nerve level & supply

Answer 9

L2-L3
skin on anterolateral surface of thigh
(travels diagionally on iliacus medial to ASIS)

Question 10

femoral nerve nerve level & supply

Answer 10

L2-L4
muscles lateral to femoral artery

Question 11

obturator nerve

Answer 11

L2-L4
muscles medial to femoral artery