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ITMhead,neck muscles

origins,insertions,actions

muscleorigininsertionaction
temporalis lateral surface of temporal bone mandible (coronoid process and ramus) closes jaw and retracts jaw
masseter zygomatic arch mandible (lateral surface of ramus) closes jaw and assists protraction-Unilaterally: lateral jaw motion to same side
orbicularis oris maxilla, mandible, lips, buccinator mucous membranes, muscles inserting into lip lip closure
buccinator maxilla, mandible lips maintains cheeks tension near teeth (thereby food in position for chewing)
medial pterygoid pterygoid plate (medial surface) mandible (medial surface of ramus) closes jaw and assists protraction - Unilaterally: lateral jaw motion to opposite side
lateral pterygoid pterygoid plate (lateral surface) mandible, temporomandibular joint capsule protracts jaw
mylohyoids-suprahyoid (blank) (blank) raises hyoid bone in swallowing (when mandible is stable or opens the jaw (when hyoid bone is stable)
digastrics (anterior and posterior bellies)-suprahyoid (blank) (blank) raises hyoid bone in swallowing (when mandible is stable) or opens the jaw (when hyoid bone is stable)
geniohyoids-suprahyoid (blank) (blank) raises hyoid bone in swallowing (when mandible is stable) or opens the jaw (when hyoid bone is stable)
thyrohyoid - infrahyoid (blank) (blank) stabilizes hyoid bone in swallowing by pulling it downward
sternothyroid-infrahyoid (blank) (blank) stabilizes hyoid bone in swallowing by pulling it downward
sternohyoid-infrahyoid (blank) (blank) stabilizes hyoid bone in swallowing by pulling it downward
omohyoid-infrahyoids (blank) (blank) stabilizes hyoid bone in swallowing by pulling it downward
sternocleidomastoid sternal head-manibruium of sternum: clavicular head-medial clavicle mastoid process of temporal bone bilaterally - flexion of neck: unilaterally-lateral flexion of neck to same side, rotation of head to opposite side
scalenus anterior transverse processes of cervical vertebrae C3-6 to 1st rib bilaterally-raise first 2 ribs during forced inspiration or assist neck flexion: Unilaterally-assists in lateral flexion of head to same side
scalenus medius transverse processes of cervical vertebrae C2-7 to 1st rib bilaterally-raise first 2 ribs during forced inspiration or assist neck flexion: Unilaterally-assists in lateral flexion of head to same side
scalenus posterior transverse processes of cervical vertebrae C4-6 to 2nd rib bilaterally-raise first 2 ribs during forced inspiration or assist neck flexion: Unilaterally-assists in lateral flexion fo hed to same side
splenius capitis ligamentum nucha; spinous processes of C7, T1-3 mastoid process of temporal bone; occipital bone bilaterally- extension of neck; Unilaterally-lateral flexion and rotation of head to same side
splenius cervicis upper thoracic vertebrae T3-6 upper cervical vertebrae (transverse processes of C1,2,3 bilaterally- extension of neck; Unilaterally-lateral flexion and rotation of head to same side
Created by: mjjjmom
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