Beginner Sacral Plexus Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which spinal levels principally contribute to the sacral plexus?
- T12 through L2
- S4 through Co1
- L4 through S4
- L1 through L3
Q2. Which structure carries L4 and L5 fibers into the sacral plexus?
- Femoral nerve
- Lumbar sympathetic trunk
- Lumbosacral trunk
- Obturator nerve
Q3. On which muscle is the sacral plexus formed?
- Obturator externus
- Rectus femoris
- Gluteus maximus
- Piriformis
Q4. What is the largest branch of the sacral plexus?
- Femoral nerve
- Ilioinguinal nerve
- Obturator nerve
- Sciatic nerve
Q5. Which nerve from the sacral plexus supplies gluteus medius and gluteus minimus?
- Posterior femoral cutaneous nerve
- Pudendal nerve
- Inferior gluteal nerve
- Superior gluteal nerve
Q6. Which nerve supplies gluteus maximus?
- Superior gluteal nerve
- Inferior gluteal nerve
- Obturator nerve
- Femoral nerve
Q7. Through which opening do many sacral plexus branches leave the pelvis?
- Obturator canal
- Lesser sciatic foramen only
- Greater sciatic foramen
- Femoral ring
Q8. Which nerve provides major cutaneous innervation to the posterior thigh?
- Iliohypogastric nerve
- Saphenous nerve
- Posterior femoral cutaneous nerve
- Deep fibular nerve
Q9. The sciatic nerve contains which two major components?
- Superior and inferior gluteal components
- Tibial and common fibular components
- Saphenous and sural components
- Femoral and obturator components
Q10. Which description best fits the sacral plexus?
- A thoracic plexus supplying intercostal muscles
- A lumbar-only network ending at L3
- A cervical nerve network supplying the upper limb
- A nerve network formed mainly from L4 through S4