神经解剖学课件：Trigeminal Nerve (V)

1、Trigeminal Nerve (V) Nerve bodies & contentsGeneral sensory(V1,V2,V3) Trigeminal ganglion Branchial motor(V3) Pons* main functions:Sensory: face, sinuses, teethMotor: muscles of mastication*Opthelmic(V1) superior orbital fissure*Maxillary(V2) Foramen rotundum*Mandibular(V3) Foramen ovaleThree 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 BranchesCorneaSkin:forehead, scalp,eyelids, nose Mucosa:nasal

3、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)Motor:

4、muscles of mastication, mylohyoid,anterior belly of digastric, tensor veli palatini, and tensor tympaniInjury to Trigeminal NerveTrauma, tumors, aneurysms, meningeal infections Paralysis: muscles of mastication with deviation of the mandible toward the side of the lesionLoss of the ability to apprec

5、iate 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 th