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Scheme of the origin, connection, and distribution of the spinal accessory nerve. Labels: Sp.Acc, spinal accessory nerve; C.1-4, first four cervical nerves (dorsal roots); Va, pneumogastric nerve; R, ganglion of the root; t, ganglion of the trunk; G.Ph, glossopharyngeal nerve; S.M, nerves to sternocleidomastoid; Tr, nerves to trapezius; F.M, foramen magnum; J.F, jugular foramen.

Spinal Accessory Nerve

Scheme of the origin, connection, and distribution of the spinal accessory nerve. Labels: Sp.Acc, spinal…