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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…

Scheme of the arrangement of the membranes of the spinal cord and the roots of the spinal nerves.

Spinal Cord and Spinal Nerves

Scheme of the arrangement of the membranes of the spinal cord and the roots of the spinal nerves.

Scheme of the distribution of a typical spinal nerve.

Spinal Nerve

Scheme of the distribution of a typical spinal nerve.

A spinal nerve. Labels: P, posterior root of a spinal nerve; G, ganglion; A, anterior root; S, spinal nerve. The white portion of the figure represents the white fibers; and the dark, the gray.

Spinal Nerve

A spinal nerve. Labels: P, posterior root of a spinal nerve; G, ganglion; A, anterior root; S, spinal…

Plan of a constitution of a spinal nerve.

Constitution of a Spinal Nerve

Plan of a constitution of a spinal nerve.

Diagram showing development of a spinal nerve and its components, together with the spinal sympathetic ganglia.

Development of Spinal Nerve

Diagram showing development of a spinal nerve and its components, together with the spinal sympathetic…

Development of the spinal nerves. A, Formation of nerve roots. B, Formation of nerve trunk (N).C, Formation of nerves. D, E, Formation of subordinate branches. F, Formation of nerve trunks in relation to the limb: dorsal and ventral trunks corresponding to lateral and anterior trunks in D and E. Labels: D.R., dorsal root; A1.C., alimentary canal; V.R., ventral root; Ao, aorta; N.T., neural tube; V., cardinal vein; No., notochord, M.P., muscle plate; D.G., dorsal ganglion; Sy., sympathetic cord; W.D., wolffian duct; Co., coelom; So., somatic division; V1, visceral branch; P, posterior primary division; Lat, lateral branches; Ant., anterior branches.

Development of the Spinal Nerve

Development of the spinal nerves. A, Formation of nerve roots. B, Formation of nerve trunk (N).C, Formation…

Scheme of the distribution of a typical spinal nerve.

Distribution of a Spinal Nerves

Scheme of the distribution of a typical spinal nerve.

Formation of a spinal nerve.

Formation of a Spinal Nerve

Formation of a spinal nerve.

Diagrammatic representation of the roots and ganglia of the spinal nerves, showing their position in relation to the spinal column. The nerves are shown as thick black lines on the left side.

Spinal Nerves

Diagrammatic representation of the roots and ganglia of the spinal nerves, showing their position in…

Diagram on frozen section, showing relations of bodies and spines of vertebrae to levels at which spinal nerves escape from vertebral canal.

Spine

Diagram on frozen section, showing relations of bodies and spines of vertebrae to levels at which spinal…