deep petrosal nerve

(redirected from radix sympathica ganglii pterygopalatini)

deep pe·tro·sal nerve

[TA]
the deep petrosal branch of the internal carotid plexus, which joins the greater petrosal nerve at the entrance of the pterygoid canal forming the nerve of the pterygoid canal and thus provides postsynaptic fibers to the pterygopalatine ganglion.

deep petrosal nerve

a nerve formed in the internal carotid plexus that leaves the plexus in the middle cranial fossa and joins the greater petrosal branch of the facial nerve. It carries postganglionic sympathetic fibers destined mainly for blood vessels.

deep pe·tro·sal nerve

(dēp pĕ-trō'săl nĕrv) [TA]
Branch of the internal carotid plexus, which joins the greater petrosal nerve at the entrance of the pterygoid canal forming the nerve of the pterygoid canal and thus provides postsynaptic fibers to the pterygopalatine ganglion.
Synonym(s): nervus petrosus profundus, radix sympathica ganglii pterygopalatini, sympathetic root of pterygopalatine ganglion.

deep petrosal nerve

A bundle of postganglionic sympathetic axons from the superior cervical ganglion. These axons take the internal carotid nerve into the carotid canal in the skull, where they form the internal carotid plexus. From this plexus, the axons emerge as the deep petrosal nerve, which then joins the greater petrosal nerve in the vidian canal, en route to the pterygopalatine ganglion.
See also: nerve