cranial nerves要点.ppt

Lacrimal nerve Smallest branches Through the lateral part of superior orbital fissure Runs with the lacrimal artery Receiving a twig from the zygomaticotemporal branch of the maxillary nerve -lacrimal secretion nerve Frontal nerve The largest branch Superior orbital fissure Procceds between the lavator palpebrae superioris and the periosteum Supratrochlear nerve Skin of the upper eyelid, conjunctiva Supraorbital nerve Skin of the forehead, the upper eyelid, conjunctiva Nasociliary nerve Crosses the optic nerve Below the rectus superior 1. Anterior ethmoidal nerve 2. Posterior ethmoidal nerve Ethmoidal and sphenoidal sinuses 3. Infratrochlear nerve Eyelids, conjunctiva, lacrimal sac, skin of the nose Maxillary nerve (sensory) Passes the cavernous sinus Traverse foramen rotundum Into pterygopalatine fossa Pass through the pterygopalatine ganglion Process of the inferior orbital fissure Ganglionic branches Zygomatic branch Superior alveolar branch Infraorbital nerve Meningeal nerve Dura mater in the middle cranial fossa Two ganglionic branches -pterygopalatine ganglion -lacrimal secretion, mucosa of the nose, palate and pharynx sensory Zygomatic nerve Zygomaticotemporal nerve Zygomaticofacial nerve Skin of the templs, parasympathetic postganglionic fibres from the pterygopalatine ganglion to the lacrimal gland Superior alveolar (dental) nerves Posterior Middle anterior Molar teeth, premolar teeth, incisor, canine Mucosa of the maxillary sinus Upper gum Infraorbital nerve Infraorbital canal, foramen Lower eyelids, upper lip, cheek, nasal ala Pterygopalatine ganglion Deeply in the pterygopalatine fossa Facial nerve Parasympathetic root Nerve of the pterygoid canal (preganglionic) Greater petrosal branch Deep petrosal nerve Zygomatic branch (Max. N) (postganglionic) Zygomaticotemporal nerve Lacrimal nerve (Ophth. N) -lacrimal gangland Sympathetic root The nerve of the ptreygoid canal Postganglionic fibres Superior cervical ganglion Orbital branch Palatine nerve Nasal