Spinal Nerves Cervical nerves8 pairs Thoracic Nerves12 pairs Lumbar Nerves5 pairs Sacral Nerves5 pairs Coccygeal Nerves1 pair Total31 pairs.

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Presentation transcript:

Spinal Nerves Cervical nerves8 pairs Thoracic Nerves12 pairs Lumbar Nerves5 pairs Sacral Nerves5 pairs Coccygeal Nerves1 pair Total31 pairs

Spinal Plexuses and Nerves Cervical Plexus (C1-C5) Phrenic nerve Brachial Plexus (C5-T1) Axillary nerve, Radial nerve, Ulnar nerve Lumbar Plexus (L1-L4) Femoral nerve, Genitofemoral nerve Sacral Plexus (L4-S4) Sciatic nerve, Pudendal nerve

Spinal Nerves from the Cervical and Brachial plexuses NerveDistribution PhrenicDiaphragm AxillaryDeltoid, teres minor RadialTriceps brachii, extensor of the forearms UlnarFlexor carpi ulnaris, skin of the medial side of hand, 5 th finger, medial half of 4 th finger

Spinal Nerves from the Lumbar plexus NerveDistribution GenitofemoralCremaster muscle, skin over middle anterior surface of the thigh, scrotum and Labia majora FemoralFlexor muscles of thigh, leg extensor muscles, skin over anterior and medial thigh, medial leg and foot

Spinal Nerves from the Sacral plexus NerveDistribution SciaticCombination of two nerves, tibial and common peroneal, innervates most of lower leg. PudendalMuscle of the perineum, skin of the penis and scrotum, clitoris, labial majora, labial minora, and vagina

Review of Cranial Nerves