Facial mm Flashcards
Masseter o/i?
O: Zygomatic arch and maxilla
I: Coronoid process and ramus of mandible
Masseter action?
Elevates mandible and closes jaw
Lat Pterygoid o/i
O:
Sup head: infra temporal surface and crest of greater wing of sphenoid bone
Inf head: lat surface of lat pterygoid plate and sphenoid bone
I: Articular disc and capsule of TMJ, neck of mandible
Lat Pterygoid action
Unilat: lat deviate mandible to opposite side
Bilat: protract/depress mandible
Med Pterygoid o/i
O: med surface of lat pterygoid plate of sphenoid bone and tuberosity of maxilla
I: Med surface of ramus of mandible
Med Pterygoid action?
Unilat: lat deviates mandible to opposite side
Bilat: elevation of mandible (close jaw), protracts mandible
Temporal o/I?
O: temporal fossa and fascia
I: Coronoid process and ant edge of ramus of mandible
Temporalis action
Elevate and retract mandible
What mm make up the suprahyoids?
Geniohyoid
Mylohyoid
Stylohyoid
Digastric
What mm make up the infrahyoids?
Sternohyoid
Thyrohyoid
Omohyoid
Sternothyroid
what mm help with the movement of elevation in the TMJ
Masseter
Temporalis
Med Pterygoids
What mm help with depression of the TMJ?
Geniohyoid Mylohyoid Stylohyoid Digastric Lt Pterygoid Platysma
What mm help with protraction of TMJ
Lat Pterygoid med pterygoid (bilateral)
What mm help with Retraction of TMJ
Temporalis
Digastric
How do you palpate Masseter?
Gloved finger is placed between cheek and molars with client teeth gentle clenched
How do you palpate Medial Pterygoid?
Gloved finger placed on last molar, than slide around to med surface of molar and inf past gums towards floor of mouth
keep finger pad against inner surface of mandible and slide finger post
Resist elevation (closing)
How do you palpate Lateral Pterygoid?
Gloved finger placed between cheek and molars with fingernail against last upper molars slide finger sup and post between maxilla and coronoid process into hollow at roof of cheek pouch resist depression (opening)
How do you palpate Mylohyoid?
gloved finger placed between lower teeth and tonuge begin at incisors, finger pad lodes down inner surface of mandible to floor of mouth, continue post to last molar resist depression (opening)
