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1、Trigeminal Nerve (V)Nerve bodies & contentsGeneral sensory(V1,V2,V3)Trigeminal ganglionBranchial motor(V3) Pons * main functions: Sensory: face, sinuses, teeth Motor: muscles of mastication*Opthelmic(V1)superior orbital fissure *Maxillary(V2)Foramen rotundum *Mandibular(V3)Foramen ovale Three branch
2、es*Opthelmic(V1) superior orbital fissure*Maxillary(V2) Foramen rotundumMandibular(V3) Foramen ovale*V1:supraobital ( supraorbital notch ), supratrochlear *V2:Infraorbital(infraorbital foramen) *V3:Mental nerve (mental foramen)Superficial BranchesCornea Skin:forehead, scalp,eyelids, nose Mucosa:nasa
3、l cavity, paranasal sinusesOpthelmic(V1)Skin:face over maxilla( upper lip, maxillary teeth) Mucosa: nose, maxillary sinuses, and palateMaxillary(V2)Skin: over mandible(lower lip, side of head, mandibular teeth,temporomandibular joint) Mucosa: mouth, and anterior two thirds of tongueMandibular(V3)Mot
4、or: muscles of mastication, mylohyoid,anterior belly of digastric, tensor veli palatini, and tensor tympaniInjury to Trigeminal Nerve Trauma, tumors, aneurysms, meningeal infections Paralysis: muscles of mastication with deviation of the mandible toward the side of the lesion Loss of the ability to
5、appreciate soft tactile, thermal, or painful sensations in the face. Loss of the corneal reflex (blinking in response to the cornea being touched) and the sneezing reflex. Trigeminal neuralgia (tic douloureux), the principal disease affecting the sensory root of CN V, produces excruciating, episodic pain that is usually restricted to the areas supplied by the maxillary and/or mandibular divisions of CN V.Thank you!
