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Appendix C: Spinal Nerves and Plexuses

Mark Dutton

Figure C–1.

Motor and sensory levels of the spinal cord. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–1.)

A diagram of the vertebra and spinal cord shows the motor and sensory levels which begin at the spinal cord and spread throughout the body.
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Figure C–2.

The cervical plexus. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–2.)

A diagram of the neck, extended with the head tipped backward, depicts the cervical plexus and the related anatomy.
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Figure C–3.

The brachial plexus. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–3.)

A diagram of the posterior neck and upper back shows the structure and location of the brachial plexus.
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Figure C–4.

The median nerve (C6-C8; T1). (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–8.)

Three diagrams depict the sensory distribution of the median nerve, its innervation along the arm, and the clinical appearance of the ape hand deformity.
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Figure C–5.

The radial nerve (C6-C8; T1). (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–7.)

Three diagrams depict the sensory distribution of the radial nerve, its innervation through the arm, and the wrist drop caused by radial nerve injury.
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Figure C–6.

The ulnar nerve (C8, T1). (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–9.)

Four diagrams depict the innervation of the ulnar nerve, sensory distribution, and the clinical appearance of the claw hand deformity.
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Figure C–7.

Musculocutaneous (C5, C6) and axillary (C5, C6) nerves. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–6.)

Two diagrams depict the sensory distribution and the branches of the musculocutaneous and axillary nerves as they extend down the arm.
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Figure C–8.

Segmental innervation of the right upper extremity, anterior view. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–4.)

Two diagrams of the anterior view of the arm depict the segmental innervation at the cutaneous and muscular levels.
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Figure C–9.

Segmental innervation of the right upper extremity, posterior view. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–5.)

Two diagrams of the posterior view of the arm depict the segmental innervation at the cutaneous and muscular levels.
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Figure C–10.

The lumbar plexus. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–10.)

A diagram depicts the structure and components of the lumbar plexus.
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Figure C–11.

The sacral plexus. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–12.)

A diagram depicts the branches and structure of the sacral plexus.
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Figure C–12.

The pudendal and coccygeal plexuses. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw Hill, 2020. Figure C–18.)

A diagram depicts the pudendal and coccygeal plexuses.
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Figure C–13.

The femoral (L2-L4) and obturator (L2-L4) nerves. (Reproduced with permission from Waxman SG. Clinical Neuroanatomy, 29th ed. New York, NY: McGraw ...

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