Beginner Obturator Nerve Quiz

Q1. From which spinal nerve roots is the obturator nerve usually formed?

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

Q2. Which divisions of the L2 to L4 anterior rami form the obturator nerve?

• Dorsal rami
• Anterior divisions
• Posterior divisions
• White rami communicantes

Q3. Within which muscle is the obturator nerve formed?

• Gluteus medius
• Psoas major
• Piriformis
• Rectus abdominis

Q4. From which border of psoas major does the obturator nerve emerge?

• Superior border
• Lateral border
• Anterior midline
• Medial border

Q5. Through which passage does the obturator nerve enter the medial thigh?

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

Q6. Which thigh compartment receives most of its motor innervation from the obturator nerve?

• Anterior compartment
• Medial compartment
• Posterior compartment
• Gluteal compartment

Q7. Which movement is most strongly associated with obturator nerve motor function?

• Thigh adduction
• Hip extension
• Knee extension
• Ankle dorsiflexion

Q8. Into which two major divisions does the obturator nerve usually separate near the obturator canal?

• Medial and lateral plantar divisions
• Tibial and fibular divisions
• Superior and inferior divisions
• Anterior and posterior divisions

Q9. Which muscle typically separates the anterior and posterior divisions of the obturator nerve in the thigh?

• Biceps femoris
• Rectus femoris
• Adductor brevis
• Tensor fasciae latae

Q10. Which cutaneous region may receive sensory fibers from the obturator nerve?

• Posterior forearm
• Sole of the foot
• Medial thigh
• Lateral leg