1. Muscles of Mastication
Jaw closing muscles
Masseter
Temporalis
Medial pterygoid
Jaw opening muscles
Lateral pterygoid
Inferior head
Superior head
Anterior digastric
05/23/05
Review

2. Masseter
Origin:
zygomatic process of the maxilla and inferior border of zygomatic arch
Insertion:
angle of the mandible inferior, lateral side of ramus
Innervation:
masseteric nerve
Function:
elevate mandible
05/23/05
Review

3. 05/23/05
Review

4. 05/23/05
Review

5. Temporalis Origin: temporal fossa and temporal fascia Insertion:
coronoid process of the mandible
Innervation:
temporal nerve
Function:
elevate mandible
05/23/05
Review

6. 05/23/05
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7. 05/23/05
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8. Medial Pterygoid Origin:
pterygoid fossa on medial surface of lateral pterygoid plate
Insertion:
medial surface of angle of the mandible
Innervation:
medial pterygoid nerve
Function:
elevate mandible
05/23/05
Review

9. 05/23/05
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10. 05/23/05
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11. Sphenoid
05/23/05
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12. 05/23/05
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13. Origin of
Medial
Pterygoid
05/23/05
Review

14. Lateral Pterygoid -- Inferior Head
Origin:
lateral surface of lateral pterygoid plate
Insertion:
anterior neck of mandible
Innervation:
branch of masseteric
or buccal nerve
Function:
pull condyle and disk
along the eminence
05/23/05
Review

15. 05/23/05
Review

16. Origin of
Lateral
Pterygoid,
Inferior
head
05/23/05
Review

17. Lateral Pterygoid -- Superior Head
Origin:
infratemporal fossa of greater sphenoid wing
Insertion:
anterior neck of the mandible
Innervation:
branch of masseteric
or buccal nerve
Function:
pull condyle and disk
along the eminence
05/23/05
Review

18. Superior
Head of
Lateral
Pterygoid
05/23/05
Review

19. Digastric Origin: posterior digastric mastoid notch of temporal bone
Insertion:
anterior digastric lingual, inferior border of the mandible
Innervation:
Posterior digastric--facial nerve
Anterior digastric--mylohyoid, mandibular nerve
Function:
Lower mandible, raise hyoid
05/23/05
Review

20. ANTERIOR DIGASTRIC
05/23/05
Review

21. Thank you and Best of Luck!
05/23/05
Review