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muscles
origins, insertions, actions, innervations
23
Anatomy
Graduate
02/26/2008

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Cards

Term
Temporalis
Definition
O: temporal fossa, temporal lines
I: coronid process of mandible
A: elevates mandible
N: V3
Term
Masseter
Definition
O: zygomatic arch
I: lateral portion of ramus of mandible
A: elevates mandible
N: V3
Term
Lateral pterygoid
Definition
O: sphenoid
I: anterior side of condylar process of mandible
A: protracts mandible, depress mandible, move mandible side to side
N: V3
Term
Medial pterygoid
Definition
O: sphenoid
I: medial aspect of mandible
A: elevate mandible, move mandible side to side (grind), help protract mandible
N: V3
Term
Superior oblique
Definition
rotates pupil down and out; rotates superior aspect of eyeball medially; N: SO 4
Term
Lateral rectus
Definition
pulls pupil laterally
N: LR 6
Term
Inferior oblique
Definition
rotates pupil up and out
N: all else 3
Term
Genioglossus
Definition
O: mental spine of mandible
I: undersurface of tongue
A: depress and protracts tongue (stick out)
N: XII
Term
Styloglossus
Definition
O: styloid process of temoral bone
I: lateral side and undersurface of tongue
A: elevates and retracts tongue
N: XII
Term
Hyoglossus
Definition
O: body of hyoid bone
I: side of tongue
A: depresses sides of tongue
N: XII
Term
Platysma
Definition
O: fascia of neck
I: inferior border of mandible
A: depresses mandible and lower lip and tenses sking of ant neck, (shriek m)
N: VII
Term
Sternocleidomastoid (hippie walk, duck)
Definition
O: manubrium and clavicle
I: mastoid process of temporal bone
A: flexes neck, extends head, turns head side to side
N: XI, C2,3
Term
Anterior scalene
Definition
O: TP’s of C3-C6
I: medial aspect of rib 1
A: elevate first rib
N: cervical nerves
Term
Middle scalene
Definition
O: TP’s C2-C7
I: first rib
A: elevate first rib
N: cervical nerves
Term
Posterior scalene
Definition
O: TP’s C4-C6
I: on rib 2
A: elevates rib 2
N: cervical nerves
Term
digastricus
Definition
O: ant belly- inferior border of ant mandible
O: post belly- mastoid process of temporal bone
I: hyoid bone
A: opens mouth, depress mandible, elevates hyoid
N: ant V3, post VII
Term
digastricus
Definition
O: ant belly- inferior border of ant mandible
O: post belly- mastoid process of temporal bone
I: hyoid bone
A: opens mouth, depress mandible, elevates hyoid
N: ant V3, post VII
Term
stylohyoid
Definition
O: styloid process of temporal bone
I: body of hyoid bone
A: elevates hyoid
N: VII
Term
mylohyoid
Definition
O: inferior border of mandible
I: body of hyoid
A: elevates hyoid
N: CN V
Term
sternohyoid
Definition
N: C1-3
manubrium to body of hyoid
Term
sternothyroid
Definition
N: C1-3
manubrium to thyroid cartilage
Term
thyrohyoid
Definition
N: C1-3
thyroid cartilage to greater cornu of hyoid
Term
omohyoid
Definition
N: C1-3
superior border scapula to body of hyoid
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