Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Nerve supply of head and neck

20,357 views

Published on

  • Login to see the comments

Nerve supply of head and neck

  1. 1. Nerve Supply Of Head And Neck INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. Contents • Introduction • Basics of nervous system • Cutaneous supply of head and neck • Trigeminal nerve • Cervical plexus • Motor supply to head and neck • Facial nerve • Ansa cervicalis • Spinal accessory nerve • Nerve supply of : • Extra ocular muscles • Nasal cavity • Palate • Tongue • Pharynx • Larynx • Teeth www.indiandentalacademy.com
  3. 3. Introduction www.indiandentalacademy.com
  4. 4. www.indiandentalacademy.com
  5. 5. Neuron •Perikaryon •Dendrites •Axon •Myelin sheath •Synapse www.indiandentalacademy.com
  6. 6. Neuron •Perikaryon •Dendrites •Axon •Myelin sheath •Synapse www.indiandentalacademy.com
  7. 7. Nerve structures •Multipolar •Bipolar •Unipolar Classes of nerve fibres •Type A, B,C •Myelinated & Unmyelinated •Sensory & Motor www.indiandentalacademy.com
  8. 8. Sensory receptors •Free nerve endings •epidermal •dermal •Meissner’s corpuscle •Merkel disc endings •Pacinian corpuscle •Ruffini terminal •Golgi tendon organ www.indiandentalacademy.com
  9. 9. www.indiandentalacademy.com
  10. 10. Nerve supply of head and neck www.indiandentalacademy.com
  11. 11. www.indiandentalacademy.com
  12. 12. www.indiandentalacademy.com
  13. 13. CUTANEOUS SUPPLY OF HEAD AND NECK www.indiandentalacademy.com
  14. 14. Cutaneous supply of: Head – Trigeminal nerve Neck – Cervical plexus www.indiandentalacademy.com
  15. 15. Trigeminal nerve www.indiandentalacademy.com
  16. 16. Branches www.indiandentalacademy.com
  17. 17. Trigeminal nuclei •Mesencephalic nucleus •Principal sensory nucleus •Nucleus of spinal tract •Motor nucleus www.indiandentalacademy.com
  18. 18. Functional components www.indiandentalacademy.com
  19. 19. Distribution •Branches •Relation with ganglions www.indiandentalacademy.com
  20. 20. Ophthalmic nerve •Branches •Lacrimal •Frontal •Nasociliary •Ciliary ganglion www.indiandentalacademy.com
  21. 21. Ophthalmic Nerve www.indiandentalacademy.com
  22. 22. M a x i l l a r y N e r v ewww.indiandentalacademy.com
  23. 23. In the cranium Meningeal In pterygopalatine fossa Ganglionic, zygomatic, post. Sup. Alveolar In the infraorbital canal Middle sup.Alv, ant. Sup. Alv On the face palpebral, nasal, sup labial Branches of maxillary nerve www.indiandentalacademy.com
  24. 24. Pterygopalatine ganglion - Orbital - Palatine - Nasal - Pharyngeal www.indiandentalacademy.com
  25. 25. Mandibular Nervewww.indiandentalacademy.com
  26. 26. Main trunk Ant. trunk Post trunk Nervus spinosus n. To M. pterygoid Buccal n. n. to masseter n. To L. pterygoid Deep temporal N. Auriculotemporal Lingual Inf. Alveolar Branches of mandibualr nerve www.indiandentalacademy.com
  27. 27. Inf dental nerve does not occupy a single canal, but is plexiform in arrangement. It is also joined, directly, or thru its plexiform branches, by rami entering the bone as parts of neurovascular bundles, derived from attached muscles such as masseter. Such ‘accessory’ dental nerves ramify particularly in a plane lateral to the molar teeth, and their common occurrence accounts for the incomplete abolition of pain by inf. dental nerve block - Carter and Keen 1971 www.indiandentalacademy.com
  28. 28. The nerves which supply the incisor teeth form an elaborate plexus on the external aspect of the mandible after emerging from the mental foramen and before they re-enter the bone. - Starkie and Stewart 1931 www.indiandentalacademy.com
  29. 29. Otic Ganglion www.indiandentalacademy.com
  30. 30. Submandibular Ganglion www.indiandentalacademy.com
  31. 31. Cervical Plexus •Lesser occipital •Greater auricular •Transverse cervical •Supra clavicular www.indiandentalacademy.com
  32. 32. MOTOR SUPPLY OF HEAD AND NECK www.indiandentalacademy.com
  33. 33. Head: Muscle of facial expression – VII nerve Neck: Ant triangle -- supra hyoid -- infra hyoid – Ansa cervicalis SCM & trapezius – Spinal accessory Vertebral muscles – Dorsal rami of spinal n. Suboccipital -- Dorsal rami of C1 www.indiandentalacademy.com
  34. 34. Facial nerve nuclei www.indiandentalacademy.com
  35. 35. Functional components www.indiandentalacademy.com
  36. 36. Within petrous temporal www.indiandentalacademy.com
  37. 37. In facial canal At stylomastoid On the face Gr petrosal N. To stapedius Chorda tympani Post auricular Post belly of digastric Stylohyoid Temporal Zygomatic Buccal Marginal mandibualar cervical Branches of facial nerve www.indiandentalacademy.com
  38. 38. Geniculate ganglion www.indiandentalacademy.com
  39. 39. Facial Nerve www.indiandentalacademy.com
  40. 40. Branches on the face www.indiandentalacademy.com
  41. 41. Various types of branching www.indiandentalacademy.com
  42. 42. Relation with parotid www.indiandentalacademy.com
  43. 43. Branches of communication www.indiandentalacademy.com
  44. 44. Ansa cervicalis www.indiandentalacademy.com
  45. 45. The origin of the inferior root varies. Porirear and Chernikov (1965) Based on 160 dissections Cervical ventral rami 2, 3 74% 2, 3, 4 14% 3 alone 4% 1, 2, 3 2% www.indiandentalacademy.com
  46. 46. Accessory nerve www.indiandentalacademy.com
  47. 47. References • Gray’s anatomy; 36th edition; Williams and Warwick • Anatomy and Physiology: The unity of form and function; Kenneth S. Saladin • Clinical neuroanatomy for medical students; 4th edition; Richard S. Snell • Chaurasia’s human anatomy; 4th edition • Anatomy for surgeons volume 1: The head and neck; 3rd edition; Hollinshead • Human anatomy; Prives, Lysenkov, Bushkovich • Grants atlas of anatomy • Text book of human neuroanatomy; 6th edition; Inderbir Singh www.indiandentalacademy.com
  48. 48. THANK YOU…. www.indiandentalacademy.com

×