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Cranial Nerves: Functions and Anatomy

Explore the complexities of cranial nerves and their sensory, motor, and mixed functions in the nervous system. Learn about each nerve's specific roles and connections to different regions of the body.

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Cranial Nerves: Functions and Anatomy

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  1. Cranial NervesLecture 5

  2. On Old Olympus Towering Tops, A Finn And German Viewed Some Hops

  3. On Old Olympus Towering Tops, A Finn And German Viewed Some Hops

  4. On Old Olympus Towering Tops, A Finn And German Viewed Some Hops • Olfactory (CN I) • Optic (CN II) • Oculomotor (CN III) • Trochlear (CN IV) • Trigeminal (CN V)

  5. On Old Olympus Towering Tops, A Finn And German Viewed Some Hops • Abducent/Abducens (CN VI) • Facial (CN VII) • Auditory/Acoustic (CN VIII) • Glossophraryngeal (CN IX)

  6. On Old Olympus Towering Tops, A Finn And German Viewed Some Hops • Vagus (CN X) • Spinal accessory (CN XI) • Hypoglossal (CN XII)

  7. Sensory, Motor, and Mixed • Sensory: afferent fibers that take information back to the brain • 5 senses: Smelling, seeing, tasting, hearing, touch • Proprioception: sense of where the body is in space • Motor: efferent fibers that bring information from the brain • Movement • Mixed: both sensory (afferent) and motor (efferent)

  8. The Cranial Nerves Song http://www.youtube.com/watch?v=IBuPzn_8UTc&feature=related

  9. Cranial Nerves Bear, M.F., Connors, B.W., & Paradiso, M.A., 2007, Neuroscience: Exploring the brain, Lippincott Williams and Wilkins, pg. 232.

  10. Introduction to the Brainstem http://www.rci.rutgers.edu/~uzwiak/AnatPhys/APFallLect19.html

  11. Trigeminal (CN V) • Sensory and motor • 3 branches: • Opthalmic (V1) • Maxillary (V2) • Mandibular (V3) Zemlin, pg 371

  12. Trigeminal (CN V)- Sensory • Opthalmic • Upper 3rd of the face • Maxillary • Middle 3rd of the face • Includes: nose, upper teeth/gums), upper pharynx, palate Blumenfeld, H., 2002, Neuroanatomy through Clinical Cases, Sinauer, Inc, pg. 508.

  13. Trigeminal (CN V)- Sensory • Mandibular • Lower 3rd of the face • Includes: lower teeth/gums, mastication muscles, skin of ear, anterior 2/3 of tongue Blumenfeld, H., 2002, Neuroanatomy through Clinical Cases, Sinauer, Inc, pg. 508.

  14. Trigeminal (CN V)- Motor • Mandibular • Muscles of mastication (chewing) • Tensor tympani Zemlin, pg 371

  15. Cranial Nerves Site http://virtuallabs.stanford.edu/demo/

  16. Cranial Nerves Bear, M.F., Connors, B.W., & Paradiso, M.A., 2007, Neuroscience: Exploring the brain, Lippincott Williams and Wilkins, pg. 232.

  17. Facial (CN VII) • Sensory and motor • Many branches Blumenfeld, H., 2002, Neuroanatomy through Clinical Cases, Sinauer, Inc, pg. 514.

  18. Facial (CN VII) • Taste: Chorda Tympani • Anterior 2/3 of tongue Blumenfeld, H., 2002, Neuroanatomy through Clinical Cases, Sinauer, Inc, pg. 514.

  19. Facial (CN VII) • Temporal • Zygomatic • Buccal • Mandibular • Cervical http://www.riversideonline.com/health_reference/Nervous-System/AN00084.cfm?RenderForPrint=1

  20. Buccal Facial (CN VII) Zygomatic Mandibular Temporal Cervical • Facial Expression • Forehead: Temporal • Blink: Zygomatic • Nose: Buccal • Lips: Buccal • Jaw: Mandibular & Cervical http://www.riversideonline.com/health_reference/Nervous-System/AN00084.cfm?RenderForPrint=1

  21. Facial (CN VII) • Stapedial muscle: nerve to stapedius muscle (A) http://medics4u.webs.com/neuroanatomyspecialsense.htm

  22. Cranial Nerves Site http://virtuallabs.stanford.edu/demo/

  23. Cranial Nerves Bear, M.F., Connors, B.W., & Paradiso, M.A., 2007, Neuroscience: Exploring the brain, Lippincott Williams and Wilkins, pg. 232.

  24. Auditory/Acoustic (CN VIII) Also called: • Auditory Vestibular • Vestibulocochlear http://extra.springer.com/2003/978-1-4020-71645/CD/JPEGS%20Chptr%2012%20Cranial%20NERVES/Chapter%2012%20Cranial%20Nerves

  25. Auditory/Acoustic (CN VIII) • Outer hair cells (sound) • Inner hair cells (sound) • Semicircular canals (balance) http://extra.springer.com/2003/978-1-4020-71645/CD/JPEGS%20Chptr%2012%20Cranial%20NERVES/Chapter%2012%20Cranial%20Nerves

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