Friday, June 17, 2011

Trigeminal Ganglion

Trigeminal ganglion is a flattened ganglion on the sensory root of the fifth cranial nerve (CN V: trigeminal nerve). It is located in a cleft in the dura mater on the anterior surface of the petrous part of the temporal bone, giving off the ophthalmic and maxillary nerves and part of the mandibular nerve. The trigeminal ganglion is crescentic in shape and receives, on its medial side, filaments from the carotid plexus of the sympathetic. Also called semilunar ganglion, it contains the cells of origin of most of the sensory fibres of the trigeminal nerve.