Unit 4 - Mandible

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

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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