Superior root of ansa cervicalis

Radix superior ansae cervicalis

Synonym: Superior limb of ansa cervicalis
Related terms: Superior root; Superior root; Superior limb; Ansa cervicalis : Superior root; Superior limb

The superior root of the ansa cervicalis is formed from cervical spinal nerve 1 of the cervical plexus. These nerve fibers travel in the hypoglossal nerve before separating in the carotid triangle to form the superior root. The superior root goes around the occipital artery and then descends on the carotid sheath. It sends off branches to the superior belly of the omohyoid muscle, and the upper parts of the sternothyroid and sternohyoidmuscles and is then joined by the inferior root.g

References

This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).