Lumbar & Sacral Plexus Anatomy Quiz

Lumbar & Sacral Plexus Anatomy Quiz

Practice lumbar and sacral plexus anatomy, including branch routes, femoral and obturator territories, sciatic components, and source-supported root ranges.

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30 questions ready

Start with a quiz

Answer from memory first, then review the rationales and revisit weak areas from this course.

Activities

Quiz30 Questions
Flashcards24 Cards
Study Notes4 Notes

List of Questions30 questions
  1. Question 1
    • Dorsal rami of T1-T4 only
    • Ventral divisions of S2-S5 only
    • Ventral divisions of L1-L4, commonly with a T12 contribution
    • Cranial nerves IX-XII
  2. Question 2
    • Within psoas major
    • Inside the femoral canal
    • Within gluteus maximus
    • On the posterior surface of the sacrum
  3. Question 3
    • Face, scalp, and tongue
    • Forearm and hand only
    • Thoracic organs only
    • Lower abdominal wall, thigh, and external genital regions
  4. Question 4
    • Phrenic nerve
    • Femoral nerve
    • Radial nerve
    • Vagus nerve
  5. Question 5
    • Obturator nerve
    • Genitofemoral nerve
    • Sciatic nerve
    • Saphenous nerve
  6. Question 6
    • Iliohypogastric nerve
    • Tibial nerve
    • Obturator nerve
    • Lateral cutaneous femoral nerve
  7. Question 7
    • Obturator canal
    • Greater sciatic foramen
    • Femoral ring
    • Inguinal canal
  8. Question 8
    • It crosses through the obturator canal
    • It runs inside the spermatic cord
    • It runs in the groove between psoas major and iliacus
    • It winds around the fibular neck
  9. Question 9
    • Common fibular nerve
    • Saphenous nerve
    • Sciatic nerve
    • Iliohypogastric nerve
  10. Question 10
    • Femoral nerve
    • Ilioinguinal nerve
    • Superior gluteal nerve
    • Tibial nerve
  11. Question 11
    • Genital and femoral branches
    • Tibial and fibular branches
    • Anterior and posterior roots
    • Medial and lateral plantar branches
  12. Question 12
    • Motor commands to quadriceps
    • Parasympathetic output to pelvic organs
    • Cutaneous sensory information
    • Motor commands to thigh adductors
  13. Question 13
    • C5-C7
    • L2-L4
    • T1-T4
    • S3-S5
  14. Question 14
    • Posterior forearm extensors
    • Medial thigh adductors only
    • Muscles of facial expression
    • Anterior compartment of the thigh, including quadriceps and sartorius
  15. Question 15
    • Finger abduction
    • Jaw closure
    • Knee extension
    • Wrist extension
  16. Question 16
    • Femoral nerve
    • Obturator nerve
    • Sciatic nerve
    • Ilioinguinal nerve
  17. Question 17
    • Little finger only
    • Posterior scalp
    • Lateral forearm only
    • Medial leg
  18. Question 18
    • C1-C4
    • L2-L4
    • T6-T12
    • S4-Co1
  19. Question 19
    • Medial thigh, including the adductor muscles
    • Anterior thigh quadriceps
    • Posterior leg plantar flexors
    • Intrinsic hand muscles
  20. Question 20
    • Femoral—medial thigh only; obturator—anterior thigh
    • Femoral—posterior arm; obturator—forearm
    • Femoral—anterior thigh; obturator—medial thigh
    • Femoral—face; obturator—neck
  21. Question 21
    • C1-C5
    • T1-T12
    • L4-S4
    • L1-L3 only
  22. Question 22
    • L4-S2
    • L1-L3
    • C5-T1
    • S4-Co1
  23. Question 23
    • Femoral and obturator components
    • Tibial and fibular components
    • Radial and ulnar components
    • Ilioinguinal and iliohypogastric components
  24. Question 24
    • L2-L4
    • C8-T1
    • S4-S5 only
    • L4-S3
  25. Question 25
    • L1-L2
    • L4-S2
    • C5-C6
    • S3-Co1
  26. Question 26
    • Muscles of facial expression
    • Diaphragm only
    • Hamstrings and muscles of the lower leg and foot through its branches
    • Anterior forearm flexors only
  27. Question 27
    • The entire posterior thigh
    • The whole plantar foot
    • The entire lateral leg
    • Parts of the medial lower leg and medial foot
  28. Question 28
    • Lumbar branches emphasize anterior/medial thigh; sacral branches emphasize posterior thigh and most of leg and foot
    • Lumbar branches supply the hand; sacral branches supply the face
    • Both plexuses supply only abdominal organs
    • Sacral branches supply only the anterior forearm
  29. Question 29
    • Every named nerve is a single sensory neuron
    • Motor and sensory fibers never travel together
    • Spinal nerve fibers reorganize in plexuses and join named peripheral nerves
    • Plexuses contain only autonomic ganglia
  30. Question 30
    • To produce cerebrospinal fluid
    • To redistribute fibers from spinal nerves into peripheral nerves
    • To join bones at a synovial joint
    • To store neuronal cell bodies in the skin
List of Flashcards24 flashcards
  1. Card 1Lumbar Plexus Formation and Routes
  2. Card 2Lumbar Plexus Formation and Routes
  3. Card 3Lumbar Plexus Formation and Routes
  4. Card 4Lumbar Plexus Formation and Routes
  5. Card 5Lumbar Plexus Formation and Routes
  6. Card 6Lumbar Plexus Formation and Routes
  7. Card 7Lumbar Plexus Formation and Routes
  8. Card 8Lumbar Plexus Formation and Routes
  9. Card 9Femoral and Obturator Functions
  10. Card 10Femoral and Obturator Functions
  11. Card 11Femoral and Obturator Functions
  12. Card 12Femoral and Obturator Functions
  13. Card 13Femoral and Obturator Functions
  14. Card 14Femoral and Obturator Functions
  15. Card 15Femoral and Obturator Functions
  16. Card 16Femoral and Obturator Functions
  17. Card 17Sacral Plexus and Sciatic Components
  18. Card 18Sacral Plexus and Sciatic Components
  19. Card 19Sacral Plexus and Sciatic Components
  20. Card 20Sacral Plexus and Sciatic Components
  21. Card 21Sacral Plexus and Sciatic Components
  22. Card 22Sacral Plexus and Sciatic Components
  23. Card 23Sacral Plexus and Sciatic Components
  24. Card 24Sacral Plexus and Sciatic Components