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CERVICOBRACHIAL PLEXUS LUMBOSACRAL PLEXUS Cerebellum 1st cervical vertebrae (transverse process)** 12th thoracic vertebrae (pedicle)** Brain 1st lumbar vertebrae (pedicle)** Trace of the mandible th Supraclavicular n. 5 lumbar vertebrae (pedicle)** T11 Thoracic st n.n. Cervical C1 th 1 cervical n. plexus 7 cervicle vertebrae Sacrum, is made up of 5 fused T12 T1-T12 C2 (pedicle & transverse process)** vertebrae (pedicles)** C1-C4 C3 L1 Lumbar Cervical C4 Upper trunk 1st thoracic vertebrae Iliohypogastric n. plexus n.n. C5 (pedicle)** L2 T12-L4 C1-C8 C6 Middle trunk Ilioinguinal n. Trace of the scapula Cervical Lumbar Brachial C7 Inferior trunk Genitofemoral n. L3 plexus C8 Lateral cord plexus Brachial n.n. L4 L1-L5 C5-T1 T1 Posterior cord 8th cervical n. plexus Lateral femoral cutaneous n. Trace of the pelvis T2 Medial cord 1st thoracic n. L5 Sacral Intercostal n.n. Femoral n. T3 Humerus plexus Spinal cord Superior gluteal n. S1 T4 L5-S4 Thoracic Musculocutaneous n. Inferior gluteal n. S2 Sacral n.n. T5 Trace of the scapula S3 T1-T12 Axillary n. S4 n.n. T6 Trace of the spinal column Posterior femoral S1-S5 cutaneous n. S5 T7 Conus medullaris Musculocutaneous n. Coccygeal T8 Axillary n. n. Radial n. Sciatic n. T9 Cauda equina Pudendal n. Radial n. Median n. T10 Cutaneous n. Ulnar n. Inferior rectal n. of forearm Posterior brachial cutaneous n. Ulnar n. Femur Median n. Subcostal n. Muscular Dorsal n. of Iliohypogastric n. branches penis (clitoris) Ilioinguinal n. Deep branch Perineal n. m. = muscle Superficial branch n. = nerve Lumbar plexus Muscular branches n.n. = nerves Trace of the pelvis ** = cut Dorsal branch Sacral plexus Palmar branch Superior & inferior gluteal n.n. Sciatic n. Dorsal digital n.n.

Femoral n. Palmar digital n.n. of the median n. Dorsal digital n.n. Palmar digital n.n. of the ulnar n. Pudendal n. Posterior femoral cutaneous n. SPINAL CORD Femoral n. NERVE STRUCTURE White matter (sensory) Nucleolus Nucleus Dorsal root (sensory) Muscular branches Axon hillock Synapse Ventral root (motor) Saphenous n. Axon (n. fiber) Gray matter Common peroneal Myelin sheath Spinous process White matter (motor) (fibular) n. Tibial n. Dendrites Node of Sensory ganglion Pia mater Ranvier Nissl (axon) Muscular Schwann cell Motor n. fibers branches substance nucleus Schwann Superior articular Arachnoid matter cell Cell body process Impulse Deep peroneal n. N. fibers Neurilemma direction Endoneurium Pedicle (sheath of Schwann) Striated m. Transverse Dura mater Saphenous n. Axonal terminal Perineurium process Telodendria Medial dorsal Gray & white rami Sympathetic ganglion cutaneous n. communicantes Myofibrils Fascicle Lateral plantar n. Inferior articular Common dorsal process & facet Common plantar digital n.n. Blood vessels digital n.n. Sympathetic trunk Medial plantar n. Intervertebral disc Proper plantar digital n.n. Vertebral body (centrum) NERVOUS SYSTEM Epineurium CUTANEOUS INNERVATION: V1 = Ophthalmic n. DERMATOMES & PERIPHERAL NERVE DISTRIBUTIONS V2 = Maxillary n. Greater occipital n. V3 = Mandibular n. C = Cervical Lesser occipital n. C2 T = Thoracic L = Lumbar Ophthalmic n. S = Sacrum V1 Maxillary n. Trigeminal n. Co = Coccyx Mandibular n. Greater occipital n. V2 Great auricular n. Lesser occipital n. V3 Transverse cervical n. Great auricular n. C3 Supraclavicular n.n. C2 Posterior branches of C4 Intercostal n.n. occipital n. C5 1. Anterior cutaneous rami Transverse cervical n. 2. Lateral cutaneous rami C3 T1 Supraclavicular n.n. C6 Axillary n. T2 C4 Posterior cutaneous rami Medial brachial cutaneous & of thoracic spinal n.n. intercostobrachial n.n. C5 T3 C6 Lower lateral brachial Laterial cutaneous rami C7 of thoracic spinal n.n. T4 cutaneous n. C8 T5 Medial antebrachial T1 Axillary n. cutaneous n.n. T6 T2 Intercostobrachial & T3 medial brachial T7 Lateral antebrachial C5 T4 cutaneous n.n. T8 cutaneous n.n. T1 T5 Posterior brachial C8 T9 Iliohypogastric n. T6 cutaneous n. T10 Genitofemoral & T7 Inferior lateral ilioinguinal n. cutaneous n. T11 T8 Radial n. T9 Lateral antebrachial T12 superbrachial T10 cutaneous n. L1 Ulnar branch T11 Posterior antebrachial C6 S2 palmar n. T12 cutaneous n. Median n.: L1 C8 L2 Digital palmar C7 L2 Medial antebrachial branches branch L3 cutaneous n. L4 Radial n. S3 Palmar L5 superficial digital S1 & dorsal L3 Genitofemoral n. branch S2 digital Dorsal n. of penis S3 branches S4 Lateral femoral C6 C7 L4 C8 S5 cutaneous n. Co1 Scrotal branch of Ulnar n. perineal n. Median n. Anterior femoral L1 cutaneous n. Ilioinguinal n. Superior cluneal n.n. Obturator n. Inferior & medial cluneal n.n. L2 Common peroneal n. Lateral femoral cutaneous n.n. Annococcygeal n. Infrapatellar branch Posterior scrotal (labial) n. L5 of the saphenous n. L3 Posterior femoral cutaneous n. Lateral sural cutaneous n. Obturator n. Medial crural cutaneous branches Infrapatellar branch of of the saphenous n. the saphenous n. S2 L4 Superficial peroneal (fibular) n. Common peroneal n. S1 Sural n. S1 Lateral sural cutaneous n. L5 Deep peroneal (fibular) n. L4 Medial crural cutaneous branches of the saphenous n. Sural n. Superficial peroneal n.

Tibial n. L5 Lateral plantar n. Medial plantar n.

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