Peripheral Nervous System: Lower Body

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1 Peripheral Nervous System: Lower Body MSTN121 - Neurophysiology Session 11 Department of Myotherapy

2 Lumbar Plexus Iliohypogastric nerve (T12-L1) Motor: Transverse abdominis and internal obliques Sensory: suprapubic region Ilioinguinal nerve (L1) Sensory: genital region Genitofemoral nerve (L1-2) Motor: cremaster Sensory: upper anterior thigh Lateral femoral cutaneous nerve (L2-3) Sensory: lateral thigh and trochanteric region Obturator nerve (L2-4) Sensory: distal 2/3 of medial thigh Motor: obturator externus, adductor longus/brevis/magnus (anterior) and gracilis Femoral nerve (L2-4) Sensory: anterior thigh and tibia (Saphenous branch) Motor: psoas major, iliacus, rectus femoris, vastus intermedius/lateralis/medialis, sartorius and pectineus

3 Sacral Plexus Superior gluteal nerve (L4-S1) Motor: gluteus medius/minimus and tensor fascia lata Inferior gluteal nerve (L5-S2) Motor: gluteus maximus Tibial nerve (inc sural, plantar nerves) Motor: hamstrings, triceps surae, deep posterior compartment of leg, plantar foot muscles Sensory: posterior calf, lateral and plantar aspect of foot Fibular nerve (inc lateral sural and branches) Motor: lateral and anterior compartment of leg Sensory: lateral thigh and trochanteric region

4 Femoral Nerve (L2-4) Motor: Psoas major, iliacus, pectineus, Sartorius, vastus lateralis/medialis/intermedius, tensor vastus intermedius (new muscle), rectus femoris Sensory: proximal medial, anterior and lateral thigh (cutaneous branches) medial tibia, calf and ankle (saphenous nerve)

5 Common Fibular Nerve (L4-S2) Motor: biceps femoris short head Sensory: lateral calf (lateral sural cutaneous)

6 Deep Fibular Nerve (L4-S2) Motor: Tibialis anterior, extensor digitorum longus/brevis and extensor hallucis longus/brevis and fibularis tertius Sensory: between 1 st and 2 nd phalanges

7 Superficial Fibular Nerve (L4-S2) Motor: fibularis longus/brevis Sensory: dorsum of the foot

8 Obturator Nerve (L2-4) Motor: obturator externus, adductor magnus (anterior), adductor brevis, adductor longus and gracilis Sensory: distal medial thigh and knee

9 Tibial Nerve (L4-S3) Motor: Biceps femoris (long head), semitendinosus, semimembranosus, adductor magnus (posterior), plantaris, gastrocnemius, poplieus, soleus, flexor hallucis longus, flexor digitorum longus and tibialis posterior. Medial plantar nerve flexor hallucis brevis, first lumbricals, flexor digitorum brevis, abductor hallucis Lateral plantar nerve - adductor hallucis, plantar/dorsal interossei, lateral lumbricals, flexor digiti minimi brevis, abductor digiti minimi and quadratus femoris Sensory: plantar surface of foot

10 Sural Nerve (S1-2) Sensory: posterolateral calf and lateral foot

11 References Lundy-Ekman, L 2013, Neuroscience: fundamentals for rehabilitation, 4th edn, Elsevier, Sydney.

12 Image References Lundy-Ekman, L 2013, Neuroscience: fundamentals for rehabilitation, 4th edn, Elsevier, Sydney.

13 COMMONWEALTH OF AUSTRALIA Copyright Regulations 1969 WARNING This material has been reproduced and communicated to you by or on behalf of the Endeavour College of Natural Health pursuant to Part VB of the Copyright Act 1968 (the Act). The material in this communication may be subject to copyright under the Act. Any further reproduction or communication of this material by you may be the subject of copyright protection under the Act. Do not remove this notice. 13

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