SLHS 261 1st Edition Lecture 3 Outline of Last Lecture I. Muscles, CNS, PNSOutline of Current Lecture II. Cranial NervesNumber Name Sensory, Motor, BothFunction Branches (if applicable)I Olfactory S SmellII Optic S VisionIII Oculomotor M Eye movementIV Trochlear M Eye movementV Trigeminal B Mastication, face, mucous membranes, teeth, tongueOphthalmic , Maxillary, MandibularVI Abducens M Eye MovementVII Facial B Face and stapedius, liquid related thingsVIII Vestibulocochlear S Hearing and balanceIX Glossopharyngeal B stylopharyngeus, tongue, pharynx; salivary gland (just one),carotid bodyX Vagus B velopharyngeal, pharyngeal, laryngealmuscles. Pharyngeal, Superior, ReccurentXI Accessory M Spinal branch (sternocleidomastoid,trapeziusmuscles)Cranial branch- pharyngeal musclesThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.XII Hypoglossal M General efferent- innervates muscles ofthe tongueIII. Disorders of Cranial NervesA. Trigeminal Neuralgia- feel pain, touch, and temperature changes in different portions of face- Nerve damage causes severe facial pain - Caused by a blood vessel that presses on the trigeminal nerve as it exits the brain stem leading to the wearing away of the myelin sheath- Occurs with multiple sclerosis- Treatment: cutting nerve or taking drugs to block nerve firingB. Bell’s Palsy: Damage to the facial nerve that results in droopy eyelid, facial paralysis, twitching or weakness; droopy corner of mouth, dry mouth, and impaired tasteC. Glossopharyngeal damage: difficulty swallowing- damage includes severe pain in tongue, throat, ear tonsils- causes include tumors and infections- Treatment: surgery or anticonvulsant/antidepressantD. Vagus Damage: Vagal Nerve Injury/ Vocal Cord Paralysis- Motor division of vagus nerve innervates laryngeal nerve supplying muscles involved in swallowing- dysphagia- Treatment IV. Vertebral Column A. cervical- C1-8 thoracic- T1-12 lumbar- L1-L5 Sacral- S1-5 Coccygeal- 1-2B. LMN in ventral horn of Gray Matter C. Nerve cells related to sensation in dorsal horn of gray