Deep petrosal nerve

The deep petrosal nerve ( " deep petrous nerve" ) is a nerve of the head portion of the sympathetic nerve, which innervates the lacrimal gland.

It arises from the internal carotid plexus, a plexus around the internal carotid artery ( internal carotid artery ), and pulls this into the temporal bone ( petrous temporal ossis ). He joins the parasympathetic nerve greater petrosal of the seventh cranial nerve to nerve of the pterygoid canal ( Vidi nerve ). This runs through the wing extension channel to the pterygopalatine ganglion, which pass through the fibers of the nerve deep petrosal without switching. Your change was already in the superior cervical ganglion of the sympathetic trunk. The sympathetic fibers are deposited in the eye socket to the zygomatic nerve ( a branch of the maxillary nerve ) and thus reach the lacrimal gland, whose secretion inhibiting.

• Autonomic Nervous System