Muscular System By Dr Jamal Ahmad

1. Muscles of
Facial Expressi
on

2. •Three groups of muscles
•OCULAR
•NASAL
•ORAL

4. •OCULAR MUSCLES
•Orbicularis oculi
• Surrounds the eye orbit and present insid
e eye lids.
• Funcionaly palpabral and orbital part . P
alpabral part for gentle and Orbital part f
or forceful closure of eye lids
• Facial Nerve.

5. • Corrugater supercilli
• Supercilliary arch run superioletraly
• Skin of eyebrows
• Draw eye brows together to form ver
tical wrinkles on bridge of nose.
• Facial Nerve.

6. •NASAL MUSCLES
•Nasalis
• Transverse part and alar part from maxilla
• Transeverse part into aponurosis of Dorsum of
nose and alar part into alar cartilage.
• Transeverse part compres the nares and alar
part open the nares.
• Facial Nerve

7. •Procerus muscle
• Nasal bone
• Lower Medial margin of forehead
• Pulls the eyebrows downward to for
m transeverse wrinkles on top of no
se.
• Facial Nerve.

8. • Depressor septi nasi
• Maxilla above Medial incisor tooth
• Nasal septum
• Pulls the nose inferiorly to open t
he nares.
• Facial Nerve.

9. •ORAL MUSCLES
• Orbicularis oris
• Maxilla and other muscles of cheek
• Skin and mucous membrane of lips
•Purses the lips
•Facial Nerve.

10. •Buccinator
• From maxilla and mendible run inf
eriomedialy
• Blending over Orbicularis oris and lip
s.
• Pulls the cheek inwards against teeth t
o prevent food collection in this space
.
• Facial Nerve.

11. •Other muscles
• Lower group
• Depressor angular oris, Depressor l
abi oris and mentalis .
• Upper group
• Risorius, Zygomaticus major, Zygomati
cus minor, labi superioris, Levator angu
lar oris, Alaque nasi.

12. THANK YOU
By
Dr. Jamal A. Khan