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Muscles of facial expression

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muscles of face facial expression

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Muscles of facial expression

  1. 1. Muscles of Facial Expression Maj Rishi Pokhrel Dept of Anatomy NAIHS www.slideshare.net
  2. 2. Anatomy of dimple
  3. 3. Panniculus carnosus?
  4. 4. Role of muscles of facial expression?
  5. 5. Classification Orifice Dilator Sphincter Orbital 1. Frontalis of OF 2. LPS 1. Orbicularis oculi Nasal 1. Nasalis – lalar part (dialotor naris) 1. Nasalis – transverse part (compressor naris) Oral 1. Levator labi superioris alaeque nasi 2. Levator labi superioris 3. Levator anguli oris 4. Zygomaticus minor 5. Zygomaticus major 6. Risorius 7. Depressor anguli oris 8. Depressor labii inferioris 9. Mentalis 1. Orbicularis oris
  6. 6. Some other MOFE • Buccinator • Procerus • Corrugator supercilii • Platysma • Depressor septi
  7. 7. Branches of CN VII
  8. 8. Muscles of eyelid • Orbicularis oculi • Palpebral part – Medial palpebral ligament – Lateral palpebral raphe • Orbital part – Ant lacrimal crest – frontal process of maxilla • Action • Nerve supply: temporal & zygomatic branches of CN VII • LPS: muscles of eye • Frontalis of OP: scalp
  9. 9. Other muscles around eyelids
  10. 10. Muscles around nostril • Nasalis – Transverse part - Sphincter – Alar part - dialator
  11. 11. Muscles of lips and cheeks
  12. 12. Buccinator • Attachments – Both jaws opposite molar teeth – Pterygomandibular raphae – Upper and lower lips – orbicularis oris • NS: Buccal branch of VII • Action • Pierced by parotid duct
  13. 13. Buccinator
  14. 14. Orbicularis oris
  15. 15. Orbicularis oris • Fibers of buccinator • Incisive slips • Mental slips • Modiolus • NS: Buccal branch of VII
  16. 16. Other muscles around lips
  17. 17. Platysma • Below the clavicle • Mandible • Modiolus • Risorius • NS: cervical br of VII • Action
  18. 18. FACIAL MUSCLES: ACTIONS
  19. 19. FACIAL MUSCLES: ACTIONS
  20. 20. Clinical anatomy • Functional importance – Orbicular oculi – Orbicularis oris – Buccinator • Aesthetic importance – Modiolus – Facial asymmetry • Testing of CN VII • Plastic surgery: e.g. artificial dimple
  21. 21. Dimple •‘Cute birth defect’ •Short zygomaticus major muscle •Dimples may disappear with age •Can be created artificially by shortening or splitting of zygomaticus major
  22. 22. ?

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