The preganglionic parasympathetic axons synapse in the pterygopalatine ganglion, which contains the postganglionic neurons which provide secretomotor innervation to the lacrimal gland, as well as the nasal and palatine glands. The postganglionic sympathetic axons do not synapse in the pterygopalatine ganglion, they travel on the branches of the maxillary nerve to provide sympathetic innervation to blood vessels.
Nerve of pterygoid canal
Buccal branches of the facial nerve
Oculomotor nerve
Supratrochlear nerve
Olfactory nerve
Marginal mandibular branch of the facial nerve
Auriculotemporal nerve
Iris sphincter muscle