Intermediate Lumbar Plexus Quiz

Q1. What are the usual root values of the femoral nerve?

• L2 to L4
• L1 only
• S1 to S3
• L4 to S2

Q2. What are the usual root values of the obturator nerve?

• L2 to L4
• T12 to L1
• S2 to S4
• L5 to S2

Q3. Which lumbar plexus nerve usually has root values L2 and L3 and crosses the iliacus toward the ASIS?

• Lateral femoral cutaneous nerve
• Genitofemoral nerve
• Obturator nerve
• Ilioinguinal nerve

Q4. Which nerve typically pierces psoas major and descends on its anterior surface?

• Iliohypogastric nerve
• Femoral nerve
• Genitofemoral nerve
• Obturator nerve

Q5. Which lumbar plexus branches emerge from the lateral border of psoas major?

• Obturator and accessory obturator nerves only
• Iliohypogastric, ilioinguinal, lateral femoral cutaneous, and femoral nerves
• Genitofemoral and obturator nerves only
• Sciatic and pudendal nerves

Q6. Which lumbar plexus branch carries fibers from L4 toward the sacral plexus?

• The contribution from L4 to the lumbosacral trunk
• The ilioinguinal nerve
• The femoral branch of genitofemoral nerve
• The subcostal nerve

Q7. What is the usual root value of the genitofemoral nerve?

• L1 and L2
• L3 and L4
• S2 and S3
• L5 and S1

Q8. Which lumbar plexus nerve passes deep to the inguinal ligament into the thigh lateral to the femoral artery?

• Femoral nerve
• Genital branch of genitofemoral nerve
• Obturator nerve
• Ilioinguinal nerve

Q9. Through which opening does the obturator nerve leave the pelvis?

• Superficial inguinal ring
• Femoral canal
• Greater sciatic foramen
• Obturator canal

Q10. Which terminal sensory branch of the femoral nerve supplies the medial leg and medial foot?

• Sural nerve
• Saphenous nerve
• Ilioinguinal nerve
• Superficial fibular nerve