Intermediate Sciatic Nerve Quiz

Q1. From which divisions of the sacral plexus is the tibial component of the sciatic nerve derived?

• Sympathetic rami only
• Anterior divisions
• Posterior divisions
• Dorsal rami only

Q2. From which divisions is the common fibular component of the sciatic nerve derived?

• Posterior divisions
• Dorsal roots only
• Anterior divisions only
• Gray rami only

Q3. Which bony landmark lies deep to the sciatic nerve as it enters the gluteal region?

• Anterior superior iliac spine
• Pubic tubercle
• Medial malleolus
• Ischial tuberosity

Q4. Which muscle covers the sciatic nerve superficially in the gluteal region?

• Rectus femoris
• Gluteus minimus only
• Iliacus
• Gluteus maximus

Q5. Which muscle usually separates the sciatic nerve from the posterior surface of the hip joint superiorly?

• Obturator internus and gemelli
• Pectineus
• Vastus medialis
• Sartorius

Q6. Which hamstring muscle is not supplied by the tibial component of the sciatic nerve?

• Semitendinosus
• Short head of biceps femoris
• Semimembranosus
• Long head of biceps femoris

Q7. What is the usual relationship of the sciatic nerve to adductor magnus in the posterior thigh?

• It runs within the femoral sheath
• It lies on the posterior surface of adductor magnus
• It lies inside vastus medialis
• It passes through the adductor hiatus

Q8. Where does the sciatic nerve most commonly divide into its terminal components?

• At the femoral ring
• At the medial malleolus
• Inside the obturator canal
• Near the superior part of the popliteal fossa

Q9. Why is the sciatic nerve vulnerable during poorly placed gluteal intramuscular injections?

• It lies superficially over the patella
• It passes through the femoral canal
• Its deep gluteal course places it at risk in unsafe injection regions
• It runs along the medial ankle

Q10. Which statement describes high division of the sciatic nerve?

• The nerve lacks a tibial component
• The femoral and obturator nerves fuse in the thigh
• The tibial and common fibular components separate unusually proximally
• The sciatic nerve divides only at the ankle