plural of petroselinate

(neuroanatomy) A mixed nerve that contains mostly sensory and some parasympathetic fibers, arises in the geniculate ganglion, joins with the deep petrosal nerve at the entrance of the pterygoid canal to form the Vidian nerve, and as part of this nerve sends sensory fibers to the soft palate with some to the Eustachian tube and sends parasympathetic fibers forming the motor root of the pterygopalatine ganglion.

(neuroanatomy) The continuation of the tympanic nerve beyond the inferior ganglion of the glossopharyngeal nerve that passes into the cranial cavity through the petrous part of the temporal bone and out again to terminate in the otic ganglion which it supplies with preganglionic parasympathetic fibers.

(neuroanatomy) A sympathetic nerve that originates in the carotid plexus, passes through the cartilage of the Eustachian tube, joins with the greater petrosal nerve at the entrance of the pterygoid canal to form the Vidian nerve, and as part of this nerve passes through the pterygopalatine ganglion without forming synapses to be distributed to the mucous membranes of the nasal cavity and palate.

(neuroanatomy) Any of several small nerves passing through foramina in the petrous portion of the temporal bone.

plural of petrosal ganglion

(neuroanatomy) Synonym of inferior ganglion.

(anatomy) Either of two venous sinuses on each side of the base of the brain.

(anatomy) The smaller of the two petrosal sinuses that is situated superiorly and connects the cavernous and transverse sinuses of the same side.

(anatomy) The larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.