Cervical plexus

The cervical plexus is a plexus of the anterior rami of the first four cervical spinal nerves which arise from C1 to C4 cervical segment in the neck. They are located laterally to the transverse processes between prevertebral muscles from the medial side and vertebral (m. scalenus, m. levator scapulae, m. splenius cervicis) from lateral side. There is anastomosis with accessory nerve, hypoglossal nerve and sympathetic trunk.

It is located in the neck, deep to sternocleidomastoid m. Nerves formed from the cervical plexus innervate the back of the head, as well as some neck muscles. The branches of the cervical plexus emerge from the posterior triangle at the nerve point, a point which lies midway on the posterior border of the sternocleidomastoid. Also from the posterior ramus of C2 greater occipital nerve arises

Cervical plexus
Gray784
Dermatome distribution of the trigeminal nerve (Superficial cervical plexus visible in purple, at center bottom.)
Details
FromC1-C4
Identifiers
Latinplexus cervicalis
MeSHD002572
TAA14.2.02.012
FMA5904
Anatomical terms of neuroanatomy

Branches

The cervical plexus has two types of branches: cutaneous and muscular.

Additionally there are two branches formed by the posterior roots of spinal nerves:

  • Preauricular nerve (from the posterior roots of C2–C3)[2][3]
  • Postauricular nerve (from the posterior roots of C3–C4)[3]

Diagram

Cervical plexus

Additional images

Gray804

Plan of the cervical plexus.

Gray805

The nerves of the scalp, face, and side of neck.

Gray838

The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses.

Gray1210

Side of neck, showing chief surface markings.

See also

  • Cervical plexus block

References

  1. ^ Clinically Oriented Anatomy by Moore and Dally's
  2. ^ Robert Schwartzman (15 April 2008). Neurologic Examination. John Wiley & Sons. p. 58. ISBN 978-1-4051-7283-7.
  3. ^ a b R.J. Schwartzman (31 July 2006). Differential Diagnosis in Neurology. IOS Press. pp. 326–. ISBN 978-1-60750-179-4.

External links

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