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Unit 4 - Mandible
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Three ligaments that facilitate movement of the mandible
Temporomandibular ligament
Sphenomandibular ligament
Stylomandibular ligament
Mandible moves up and down _____ times per second when talking or chewing
7.5
TMJ Temporomandibular joint syndrome
People develop discomfort in temporomandibular joint
Muscles that lower the mandible
Digastric
Mylohyoid
Geniohyoid
External pterygoid
External pterygoid
Origin:
lateral pterygoid plate and greater wing of the sphenoid bone
Insertion:
condyle of mandible
Action:
extends the jaw and helps lower it
Muscles that lift the mandible
Masseter
Temporalis
Internal pterygoid
Masseter
Origin:
zygomatic arch
Insertion:
all along the ramus of the mandible
Temporalis
Origin:
squamous portion of temporal bone
Insertion:
anterior border of ramus of the mandible
Internal pterygoid
Sometimes called the internal masseter because is path is similar to the masseter
Origin:
lateral pterygoid plate and perpendicular plate of the palatine bone
Insertion:
inner surface of ramus of the mandible
Author
jadnebalasca
ID
184429
Card Set
Unit 4 - Mandible
Description
A&P of the speech and hearing mech
Updated
2012-11-19T18:08:25Z
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