人体解剖学颅神经 课件.ppt

Cranial nerve;Key Points of Learning;Ⅰ olfactory Ⅱ optic Ⅲ occulomotor Ⅳ trochlear Ⅴ trigeminal Ⅵ abducens;Cranial nerve: connect with brain;Openings and fissures on base of skull for CN;CRANIAL NERVE;CRANIAL NERVE;Pure sensory CN; Olfactory nerve CN I;Olfactory nerve CN I;optic n.(Ⅱ);optic nerve, chiasma, optic tract;Ⅷ vestibulocochlear conveys impulses from inner ear. sense of position terminates in vestibular N, sense of hearing in cochlear N;Vestibulocochlear N.;Pure motor CN;oculomotor n. trochlear n. abducens n.;Oculomotor n.(GSM and GVM) Midbrain Superior orbital fissure Superior division--superior rectus levator palpebrae superioris Inferior division supplies inferior medial rectus, inferior oblique. GVM fibers—parasympathetic, supply ciliary muscle and sphincter pupillae. Trochlear N Pure motor (GSM) ; midbrain ; Superior orbital fissure ; Superior oblique m Abducens N Pure motor (GSM) ; Pons ; Superior orbital fissure Lateral rectus m ;accessory n.;(Ⅻ)Hypoglossal n.;(Ⅻ)Hypoglossal nerve;Mixed CN;Trigeminal nerve V; Three divisions:; Trigeminal nerve –ophthalmic N;Trigeminal nerve –ophthalmic N;Trigeminal nerve –maxillary N;Lingual nerve to anterior 2/3 of tongue Inferior alveolar nerve to mandible, lower teeth, and chin Buccal nerve to cheek Auriculotemporal nerve to parotid gland and temporal region SVM fibers supply muscles of mastication, tensor veli palatini, and tensor tempani, etc.; tensor tympani M ; Anterior belly of digastric M ;Sensory fibers of CN V; Ⅶ Facial nerve in the temporal bone and main branches and distribution ;Ⅶ Facial nerve;facial n in the internal auditory meatus, canal, through the stylomastioid foramen; Ⅶ Facial nerve distributes to expression muscles; Ⅶ Facial nerve distributes to mucous of tongue taste; CN Ⅶ distributes to submandibular gland and sublingual gland through the submadibular ganglion;(Ⅸ) glossopharyngeal n.; (Ⅸ)glossopharyngeal n.distributes to pharyngeal muscle, parotid