12 cranial nerves

complete version. by dr. fabie :)

1. 12 CRANIAL NERVES By: Dr. Pamela Josefina T. Fabie

2. OLFACTORY NERVE Cranial Nerve I

3. I. Olfactory Nerve Component: Sensory Function: Smell Opening to the Skull: Openings in cribriform plate of ethmoid O rigin: Olfactory receptor nerve cells

4. Olfactory Nerve

5. OPTIC NERVE Cranial Nerve II

6. II. Optic Nerve Component: Sensory Function: Vision Opening to the Skull: Optic Canal Origin: Back of the eyeball

7. II. Optic Nerve

8. OCCULOMOTOR NERVE Cranial Nerve III

9. III. Occulomotor Nerve Component: Motor Function: Raises upper eyelid Turns eyeball upward, downward and medially Constricts pupil Accommodates the eye Opening to the Skull: Superior orbital fissure Origin: Anterior surface of the midbrain

10. III. Occulomotor Nerve

11. TROCHLEAR NERVE Cranial Nerve IV

12. IV. Trochlear Nerve Component: Motor Function: Assisting in turning eyeball downward and laterally Opening to the Skull: Superior orbital fissure Origin: Posterior surface of the midbrain

13. IV. Trochlear Nerve

14. TRIGEMINAL NERVE Cranial Nerve V V1. Ophthalmic Nerve V2. Maxillary Nerve V3. Mandibular Nerve

15. V. Trigeminal Nerve

16. V1. Ophthalmic Nerve Component: Sensory Function: Cornea Skin of forehead Scalp Eyelids and nose Mucous membranes of paranasal sinuses and nasal cavity Opening to the Skull: Superior orbital fissure Origin: Anterior aspect of the pons

17. V1. Ophthalmic Nerve Infratrochlear

18. V1. Ophthalmic Nerve

19. V2. Maxillary Nerve Component: Sensory Function: Skin of the face over maxilla Teeth of the upper jaw Mucous membrane of the nose, the maxillary sinus and palate Opening to the Skull: Foramen ovale Origin: Anterior aspect of the pons

20. V2. Maxillary Nerve

21. V3. Mandibular Nerve Component: a. Motor Function: Muscles of mastication Mylohyoid Anterior belly of digastric Tensor veli palatine Tensor tympani Opening to the Skull: Foramen Rotundum Origin: Anterior aspect of the pons

22. V3. Mandibular Nerve Component: b. Sensory Function: Skin of cheek Skin over mandible and side of head Teeth of lower jaw and TMJ Mucous membrane of mouth and anterior part of tongue Opening to the Skull: Foramen Rotundum Origin: Anterior aspect of the pons

23. V3. Mandibular Nerve

24. ABDUCENT NERVE Cranial Nerve V I

25. VI. Abducent Nerve Component: Motor Function: Lateral rectus muscle turns eyeball laterally Opening to the Skull: Superior orbital fissure Origin: Medulla oblongata

26. VI. Abducent Nerve

27. FACIAL NERVE Cranial Nerve VII

28. VII. Facial Nerve Component: Mixed Function: Motor muscles of the face and scalp Stapedius muscle Posterior belly of digastric Stylohyoid muscles Function: Sensory Taste from ant. 2/3 of tongue, from the floor of the mouth and palate

29. Opening to the Skull: internal acoustic meatus, facial canal, stylomastoid foramen Origin: M edulla oblongata Function: Secretomotor Submandibular and sublingual salivary glands Lacrimal gland Glands of nose and palate VII. Facial Nerve

30. VII. Facial Nerve

31. VESTIBULOCOVHLEAR NERVE Cranial Nerve VIII *Aka Auditory / Acoustic Nerve

32. VIII. Vestibulocochlear Nerve Component: Sensory Function: Vestibular - Saculae , saccule , semicircular canals – position of head Cochlear – Organ of Corti - hearing Opening to the Skull: Internal acoustic meatus Origin: Medulla oblongata

33. VIII. Vestibulocochlear Nerve

34. GLOSSOPHARYNEGEAL NERVE Cranial Nerve IX

35. IX. Glossopharyngeal Nerve Component: Mixed Function: Motor Stylopharyngeus muscle – assists swallowing Function: Sensory General sensation and taste from post. ½ of the tongue and pharynx Carotis sinus and carotid body Function: Secretomotor Parotid gland

36. IX. Glossopharyngeal Nerve Opening to the Skull: J ugular foramen Origin: M edulla oblongata

37. IX. Glossopharyngeal Nerve

38. VAGUS NERVE Cranial Nerve X

39. X. Vagus Nerve Component: Motor Function: Heart and great thoracic blood vessels Larynx, trachea, bronchi and lungs Alimentary tract from pharynx to splenic flexure of colon Liver, kidney, pancreas Opening to the Skull: Jugular foramen Origin: Medulla oblongata

40. X. Vagus Nerve

41. ACCESSORY NERVE Cranial Nerve XI

42. XI. Accessory Nerve Component: Motor Function: Cranial root Muscles of soft palate (except tensor veli palatini ) Muscles pharynx (except styopharyngeus ) Muscles of larynx (except cricothyroid ) Spinal root Sternocleidomastoid and trapezius muscle Opening to the Skull: Jugular foramen O rigin: medulla oblongata

43. XI. Accessory Nerve

44. HYPOGLOSSAL NERVE Cranial Nerve XII

45. XII. Hypoglossal Nerve Component: Motor Function: Muscles of tongue (except palatoglossus controlling its shape and movement) Opening to the Skull: Hypoglossal canal Origin: Medulla oblongata

46. XII. Hypoglossal Nerve

47. END