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10 The Anterior branches of the spinal nerves form 4 plexuses 1st Cervical ? 4 overwritten with ?6? upper 4 cervical. 2 Brachial, from 4 lower 4 cervical & 3 1st dorsal lumbar ?
10 The Anterior branches of the spinal nerves form 4 plexuses 1st Cervical ? 4 overwritten with ?6? upper 4 cervical. 2 Brachial, from 4 lower 4 cervical & 3 1st dorsal lumbar ?