muscles of face facial expression

1. Muscles
of
Facial
Expression
Maj Rishi Pokhrel
Dept of Anatomy
NAIHS
www.slideshare.net

2. Anatomy
of
dimple

3. Panniculus carnosus?

4. Role of muscles of facial expression?

6. 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

8. Some other MOFE
• Buccinator
• Procerus
• Corrugator supercilii
• Platysma
• Depressor septi

9. Branches of CN VII

10. 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

11. Other muscles around eyelids

12. Muscles around nostril
• Nasalis
– Transverse part -
Sphincter
– Alar part - dialator

13. Muscles of lips and cheeks

14. 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

15. Buccinator

16. Orbicularis oris

17. Orbicularis oris
• Fibers of buccinator
• Incisive slips
• Mental slips
• Modiolus
• NS: Buccal branch of VII

18. Other muscles around lips

19. Platysma
• Below the clavicle
• Mandible
• Modiolus
• Risorius
• NS: cervical br of VII
• Action

20. FACIAL MUSCLES: ACTIONS

21. FACIAL MUSCLES: ACTIONS

22. Clinical anatomy
• Functional importance
– Orbicular oculi
– Orbicularis oris
– Buccinator
• Aesthetic importance
– Modiolus
– Facial asymmetry
• Testing of CN VII
• Plastic surgery: e.g. artificial dimple

23. Dimple
•‘Cute birth defect’
•Short zygomaticus major
muscle
•Dimples may disappear with
age
•Can be created artificially
by shortening or splitting of
zygomaticus major

24. ?