Term
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Definition
muscles of the ears
posterior- pulls ears backward
anterior- pulls ears forward
superior- pulls ears up
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Term
| Occipitofrontalis/epicranium |
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Definition
frontal belly, occipital belly
location: over top of head
action: wrinkle forehead/raise eyebrow |
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Term
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Definition
location: over eye
action: bring eyebrows in and down |
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Term
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Definition
palpebral part and orbital part
location: around the eye
action: squint |
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Term
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Definition
location: over nose
action: pulls forehead down |
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Term
| Nasalis: Compressor and dilator nares |
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Definition
location: over nose
action: narrow passageways of nose (compressor)
flare nostrils (dilator nares) |
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Term
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Definition
location: around mouth
action: pucker/close mouth |
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Term
| Zygomaticus major and minor |
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Definition
location: cheek
action: smile (act together)
origin: zygomatic bone
insertion: orbicularis oris |
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Term
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Definition
location: runs from under the eye to upper lip
action: lifts upper lip |
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Term
| Levator Labii Superioris Alaeque Nasi |
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Definition
location: alongside the nose
action: lifts the upper lip w/ levator labii superioris
flares nostrils |
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Term
| Depressor Labii Inferioris |
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Definition
locatoin: across chin
action: pulls down the bottom lip |
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Term
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Definition
location: from corner of mouth toward eye
action: pulls up corners of mouth |
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Term
|
Definition
location: from corner of mouth down toward chin
action: pulls down corners of mouth |
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Term
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Definition
location: under buccinator
action: pulls corners of mouth straight back
insertion: corners of mouth |
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Term
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Definition
location: cheek (main cheek muscle)
action: aids in keeping food on occlusal table
insertion: corner of mouth and pterygomandibular raphe |
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Term
|
Definition
location: near chin
action: raises chin
most hated muscle by hygienist's
origin: mandible beneath incisors
inserts: chin |
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Term
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Definition
location: superficiously down the neck
action: grimace |
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Term
| Muscles of the tongue are innervated by what cranial nerve? |
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Definition
XII (12)
except palatoglossus XI (11) |
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Term
|
Definition
location: from genial tubercles to tongue
action: sticks tongue out (pulls forward)
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Term
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Definition
location: hyoid bone to tongue
action: pulls tongue down |
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Term
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Definition
location: styloid process to tongue
action: pulls tongue back (retracts tongue) |
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Term
Palatoglossus
(muscle of soft palate as well) |
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Definition
location: anterior pillar
actions: constrict fauces passageway
elevates base of tongue
dperesses soft palate |
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Term
| The muscles of mastication are innervated by which cranial nerve? |
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Definition
cranial nerve V (5)
Trigeminal nerve |
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Term
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Definition
Origin: along the zygomatic arch
insertion: angle of mandible (lateral surface)
action: elevates mandible (closes mouth) |
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Term
|
Definition
origin: temporal fossa (bone)
insertion: coronoid process
action: elevates mandible |
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Term
| Medial Pterygoid (internal) |
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Definition
origin: medial surface of the lateral ptergoid plate
insertion: medial surface of angle of the mandible
action: elevates mandible
mirrors the masseter |
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Term
| Lateral Pterygoid (external) |
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Definition
Superior head
origin: greater wings of sphenoid
insertion: TMJ capsule and meniscus
Inferior head
origin: lateral surface of lateral pterygoid plate
insertion: neck of condyle
action: lateral movement and mastication (jaws move side to side) |
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Term
|
Definition
cranial nerve XI (11)
turns head
sternum to mastoid process |
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Term
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Definition
Digastric (posterior and anterior)
Mylohyoid (CN 5)
Geniohyoid
Stylohyoid |
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Term
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Definition
Posterior: from mastoid process to hyoid bone
Anterior: from hyoid bone to lingual of mandible at symphysis
depresses mandible |
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Term
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Definition
main muscle in floor of mouth
origin: mylohyoid bone
insertion: hyoid bone
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Term
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Definition
locatoin: genial tubercles to hyoid
action: depress mandible |
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Term
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Definition
origin: styloid process
action: pulls hyoid bone back
depresses mandible |
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Term
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Definition
Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid |
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Term
|
Definition
location: soft palate to tongue
action: narrows opening of fauces
depresses soft palate
elevates base of tongue |
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Term
|
Definition
location: soft palate to pharnyx
action: aids in narrowing fauces
depresses soft palate
swallowing |
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Term
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Definition
| tenses to constrict food against tongue when swallowing |
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Term
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Definition
| elevates soft palate to close off nasal pharynx |
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Term
|
Definition
| works with soft palate to close off nasopharynx |
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