cervical plexus
Definition
Noun: - A network of nerves located in the neck region, specifically beneath the sternocleidomastoid muscle. It is formed by the ventral rami (anterior divisions) of the first four cervical spinal nerves (C1–C4). This plexus provides sensory and motor innervation to parts of the neck, head, and shoulders.
Usage
The term "cervical plexus" is used in anatomical, medical, and clinical contexts to refer to this specific neural structure. - Damage to the cervical plexus can result in loss of sensation in the neck and shoulder. - The anesthesiologist administered a block targeting the cervical plexus for the surgical procedure.
Advanced Usage
- "Cervical plexus block": A regional anesthesia technique that involves injecting local anesthetic near the cervical plexus to numb an area of the neck and shoulder for surgery or pain management.
- A cervical plexus block is often used for carotid endarterectomy.
Variants and Related Words
- Brachial plexus: A separate and larger network of nerves originating from the lower cervical and upper thoracic spinal nerves, innervating the upper limb.
- Phrenic nerve: A major nerve derived primarily from the cervical plexus (C3–C5) that controls the diaphragm.
Synonyms
- Plexus cervicalis (the Latin/Greek-derived anatomical term).
Related Terms (Not Phrasal Verbs)
- Nerve plexus: A general term for a branching network of intersecting nerves.
- Innervation: The supply of nerves to a specific organ or region of the body.
Noun
-
a nerve plexus lying beneath the sternocleidomastoid muscle
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