Neural Exam - 18 Cranial Nerves

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<html5media height="300" width="320">File:18mo 05.mp4</html5media> This infant is 18 months old.


Cranial Nerves 
Nerve Number Name Type Origin Function
CN I Olfactory sensory telencephalon smell placode
CN II Optic sensory retinal ganglial cells vision
CN III Oculomotor motor anterior midbrain extraocular muscles eye movements and pupil dilation (motor)
CN IV Trochlear motor dorsal midbrain extraocular muscles (superior oblique muscle)
CN V Trigeminal motor/sensory pons touch, mastication
CN VI Abducent motor extraocular muscles control eye movements (lateral rectus muscle)
CN VII Facial motor/sensory pons facial expression, taste (tongue anterior and central regions) regulate salivary production.
CN VIII Acoustic sensory vestibular and cochlear nuclei hearing, placode
CN IX Glossopharyngeal motor/sensory medulla swallowing and speech, taste (tongue posterior region)
CN X Vagus motor/sensory medulla larynx and pharynx muscles (speech and swallowing), regulates heartbeat, sweating, and peristalsis
CN XI Accessory motor motor neurons sternocleidomastoid and trapezius muscles
CN XII Hypoglossal motor motor neurons tongue muscles (speech, eating and other oral functions)


Cranial Nerve Development: Newborn - Normal | Newborn - Abnormal | 3 months | 12 months | 18 months | Neural - Cranial Nerve Development

Neural Exam Movies: Wants | Understanding | Points to Pictures | Points to Body Parts | Cranial Nerves Motor/Coordination - Blocks in Cup | Beads in Cup | Stacking Blocks | Pincer Grasp and Handedness | Drawing/Scribbling | Tone | Deep Tendon Reflex | Throwing Ball | Walking
Movie Source - Paul D. Larsen  
Movies from the PediNeuroLogic Exam website are used by permission of Paul D. Larsen, M.D., University of Nebraska Medical Center and Suzanne S. Stensaas, Ph.D., University of Utah School of Medicine. Additional materials were drawn from resources provided by Alejandro Stern, Stern Foundation, Buenos Aires, Argentina; Kathleen Digre, M.D., University of Utah; and Daniel Jacobson, M.D., Marshfield Clinic, Wisconsin. The movies are licensed under a Creative Commons Attribution-NonCommerical-ShareAlike 2.5 License.
Links: Neural Exam Movies | Movies



Cite this page: Hill, M.A. (2024, March 19) Embryology Neural Exam - 18 Cranial Nerves. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Neural_Exam_-_18_Cranial_Nerves

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G