Face
Muscles of face <ul><li>Eyelids  </li></ul><ul><li>Mouth  </li></ul><ul><li>Nose  </li></ul>
Orbicularis oculi  <ul><li>2 parts  </li></ul><ul><li>Palpebral – from medial palpebral ligament to lateral palpebral raph...
 
Actions  <ul><li>Palpebral fibres- close lids gently </li></ul><ul><li>Orbital part – lowers the eyebrow </li></ul><ul><li...
Orbicularis oris <ul><li>Intrinsic fibres – from mandible & maxilla near midline . Deepest fibres </li></ul><ul><li>Extrin...
Buccinator  <ul><li>Thin flat rectangular muscle </li></ul><ul><li>Origin – alveolar processes of maxilla and mandible opp...
Actions  <ul><li>Accessory muscle of mastication </li></ul><ul><li>Return bolus of food from cheek pouch to molars </li></...
 
Dilator muscles of mouth  <ul><li>Levator labii superioris aleque nasii </li></ul><ul><li>Levator labii superioris </li></...
 
Depressor anguli oris
 
 
 
Facial lacerations <ul><li>No deep fascia </li></ul><ul><li>Loose SC tissue </li></ul><ul><li>Lacerations gape widely </li...
Paralysis of facial muscles <ul><li>Injury to 7 nerve  </li></ul>
Arterial supply <ul><li>Facial a. – superior & inferior labial a. , lateral nasal a. , angular a.  </li></ul><ul><li>Super...
Veins of face <ul><li>Supra orbital & supra trochlear veins join & form angular v. , continues as facial v.  </li></ul><ul...
The End
 
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Face

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Face

  1. 1. Face
  2. 2. Muscles of face <ul><li>Eyelids </li></ul><ul><li>Mouth </li></ul><ul><li>Nose </li></ul>
  3. 3. Orbicularis oculi <ul><li>2 parts </li></ul><ul><li>Palpebral – from medial palpebral ligament to lateral palpebral raphae . Some fibres into posterior lacrimal crest & lacrimal sac </li></ul><ul><li>Orbital – larger , attached to anterior lacrimal crest & frontal process of maxilla. It forms concentric circles </li></ul>
  4. 5. Actions <ul><li>Palpebral fibres- close lids gently </li></ul><ul><li>Orbital part – lowers the eyebrow </li></ul><ul><li>Together they close eyelids forcibly </li></ul>
  5. 6. Orbicularis oris <ul><li>Intrinsic fibres – from mandible & maxilla near midline . Deepest fibres </li></ul><ul><li>Extrinsic fibres – form bulk , most come from buccinator . </li></ul><ul><li>Action – narrowing of mouth </li></ul>
  6. 7. Buccinator <ul><li>Thin flat rectangular muscle </li></ul><ul><li>Origin – alveolar processes of maxilla and mandible opposite molar teeth , pterygomandibular raphae </li></ul><ul><li>Insertion – modiolus (knot of muscles lateral to angle of mouth , resp. for dimples) </li></ul>
  7. 8. Actions <ul><li>Accessory muscle of mastication </li></ul><ul><li>Return bolus of food from cheek pouch to molars </li></ul><ul><li>keeps the cheek taut so prevents it from folding & get injured during chewing </li></ul><ul><li>Forcible expulsion of air from mouth </li></ul>
  8. 10. Dilator muscles of mouth <ul><li>Levator labii superioris aleque nasii </li></ul><ul><li>Levator labii superioris </li></ul><ul><li>Levator anguli oris </li></ul><ul><li>Zygomaticus minor & major </li></ul><ul><li>Depressor anguli oris </li></ul><ul><li>Depressor labii inferioris </li></ul>
  9. 12. Depressor anguli oris
  10. 16. Facial lacerations <ul><li>No deep fascia </li></ul><ul><li>Loose SC tissue </li></ul><ul><li>Lacerations gape widely </li></ul><ul><li>Bruising & inflammation causes large swellings </li></ul><ul><li>Wrinkles occur perpendicular to muscle fibres </li></ul>
  11. 17. Paralysis of facial muscles <ul><li>Injury to 7 nerve </li></ul>
  12. 18. Arterial supply <ul><li>Facial a. – superior & inferior labial a. , lateral nasal a. , angular a. </li></ul><ul><li>Superficial temporal a. – gives transverse facial a. </li></ul><ul><li>Supra orbital & supra trochlear a. - branches of ophthalmic a. </li></ul>
  13. 19. Veins of face <ul><li>Supra orbital & supra trochlear veins join & form angular v. , continues as facial v. </li></ul><ul><li>Retromandibular v.- formed by joining of superficial temporal v. & max. v. </li></ul><ul><li>Dangerous area of face </li></ul>
  14. 20. The End
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