1. The Peripheral Nervous System
Study Guide

2. The Brachial Plexus 2 Axillary nerve Musculo-cutaneous nerve
Radial nerve
Median nerve
Ulnar nerve
Digital branches
The major nerves of the upper limb 2

3. The Brachial Plexus 3 Digital branches
The major nerves of the upper limb 3

4. 4 Ilioinguinal nerve Femoral nerve Lateral femoral cutaneous
Nerves of the lumbar plexus, anterior view
Obturator
Ventral rami:
Anterior femoral cutaneous
Ventral rami
Anterior division L1
Posterior division
Saphenous L2
Iliohypogastric
Ilioinguinal L3
Genitofemoral
Lateral femoral cutaneous L4
Obturator L5
Femoral
Ventral rami and major branches of the lumbar plexus
Distribution of the major nerves from the lumbar plexus to the lower limb 4

5. 5 Nerves of the lumbar plexus, anterior view Ventral rami: L1 L2 L3 L4
Anterior division L1
Posterior division L2 L3 L4 L5
Ventral rami and major branches of the lumbar plexus
Distribution of the major nerves from the lumbar plexus to the lower limb 5

6. 6 Common fibular nerve Tibial nerve Superior gluteal
Inferior gluteal nerve
Sciatic nerve
Pudendal nerve
Dissection of the gluteal region, posterior view
Sciatic
Posterior femoral cutaneous nerve
Ventral rami
Ventral rami:
Anterior division
Posterior division L4
Common fibular
Superior gluteal L5
Lumbosacral trunk
Tibial
Inferior gluteal S1
Deep fibular
Common fibular S2
Superficial fibular
Tibial S3
Posterior femoral cutaneous S4
Pudendal S5
Sciatic
Co1
Ventral rami and major branches of the sacral plexus, anterior view
Distribution of the major nerves from the sacral plexus to the lower limb, posterior view 6

7. 7 Dissection of the gluteal region, posterior view L4 L5 S1 S2 S3 S4
Ventral rami
Anterior division
Posterior division L4 L5 S1 S2 S3 S4 S5
Co1
Ventral rami and major branches of the sacral plexus, anterior view
Distribution of the major nerves from the sacral plexus to the lower limb, posterior view 7