Description
The cervical plexus is made up of the anterior rami of upper four cervical nerves (C1-C4). The anterior rami are interconnected in the form of neuronal loops, which give off superficial and deep branches to various structures.
The deep branches of the cervical plexus innervate several groups of muscles including prevertebral and lateral vertebral muscles. They include the:
—phrenic nerve;
—ansa cervicalis;
—muscular branches.
Learn more about this topic from other Elsevier products
Cervical Plexus
The ansa cervicalis is a nerve loop of the cervical plexus formed by union of the descendens hypoglossi (C1 and the hypoglossal nerve fibers) and the descendens cervicalis (C2 and C3 fibers), and provides motor innervation to the infrahyoid muscles (Cesmebasi 2015).
