The Head Word Scramble
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Front | Back |
What muscles depress the TMJ (open the mouth)? | Lateral pterygoid, Suprahyoid, Infrahyoid |
What muscles elevate the TMJ (Close the mouth)? | Temporalis, Masseter, Medial pterygoid |
What muscles protrude the TMJ? | Masseter, Lateral Pterygoid, Medial Pterygoid |
What muscles deviate the TMJ from side to side? | Medial pterygoid, Lateral pterygoid, Masseter, Temporalis |
What muscles retract the TMJ? | Temporalis, Masseter, Digastric |
Which muslces flex the head and neck? | SCM, Longus Coli, Scalenes |
Which muscles Extend the head and neck? | Splenius cervicis, Spemispinalis, Iliocostalis, Logissiumus, Multifidus, Trapezius |
Which muscles rotate and laterally bend the head and neck? | SCM, Scalenes, Splenius, Longissimus, Iliocostalis, Levator scapulae, Multifidus |
what is the functional opening of the mouth | 25-35 mm |
full opening of mouth | 35-50 min |
how much is the lateral excursion or deviation | 10-15 mm |
how much is the protrusion forward | 3-6 mm |
how much is the retraction | 3-4 mm |
what happens with openning | anterior rotation 20-25 rotation of condile, 40 mm opening anterior rotation and translation |
what happens with protrusion | bilateral condylar translation |
what happens with lateral deviation | anterior translation on contralateral side; spin on ipsilateral |
what nerve innervates mm of mastification | C.N. V Trigeminal |
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PT Board Exam
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