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M. rectus capitis posterior major
Originates from spinous process of C2 to lateral portion of the inferior nuchal line.
Extends and rotates head.
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M. rectus capitis posterior minor
Originates from spinous process of C2 to lateral portion of the inferior nuchal line.
Extends and rotates head.
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M. scalenous anterior
Originates from trans. proc. of C3-6 and inserts as the scalene tubercle.
Raises first rib (respiration), lat. flex and rotate neck.
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M. scalenous medius
Originates from trans. proc. of C2-7 and inserts to the upper medial surface of 1st rib.
Raises first rib (respiration), lat. flex and rotate neck.
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M. scalenous posterior
Originate from trans. proc. of C5-7 and inserts to tuberosity of 2nd rib.
Raises 2nd rib (respiration), lat. flex and rotate neck.
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M. serratus anterior
Originates from outer surfaces of ribs 1-8 to anterior surface of medial scapular border.
Rotates scapula for abduction and flexion of arm, protracts scapula.
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M. obliquus externus abdominis
Originates from lower 8 ribs towards sternum and inserts into the ischial crest.
Lat. flex and rotates vert, column, compresses abdomen.
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Mm. intercostalis
intercostal muscles that create the costal groove
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M. temporalis
Originates from temporal line and descends through zygomatic fossa to insert in coronoid process of mandible. Covers portions of parietal, frontal, and temporal.
Closes lower jaw, clenches teeth
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M. semispinalis capitis
Originates from trans. proc. C4-T7 and inserts between superior and inferior nuchal lines. Mustache muscle!
Extends and rotates head.
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M. sternocleidosmastoideous
Originates from manubrium and calvicular heads and inserts into mastoid process and lat superior nuchal line.
Bends neck laterally, flexes neck, and elevates chin.
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M. splenius capitis
Originate from lig. nuchae and spin. proc. of C7-T4 and inserts to lateral superior nuchal line and mastoid process.
Extend, hyperextend head and neck, lat. flex and rotate neck and head.
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M. digastricus
Originates from digastric fossa of mastoid process and mandible and inserts intermediately with tendon attached to hyoid.
Raises hyoid, moves hyoid forward and backward. Swallowing.
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M. trapezius
Originates from superior nuchal line, ext. occip. protub. and spin. proc. of C7-T12 and inserts to lateral clavicle, middle acromion proc. and medial crest of scapular spine.
Movement of scapula to facilitate arm movement.
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M. masseter
Originates from the zygomatic arch and masseteric tubercle and inserts to lateral surfaces of angle, ramus, and coronoid.
Closes lower jaw, clenches teeth.
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M. pterygoid medialus
Originates from lat. petrygoid plate, palatine, and maxilla tuberosity and inserts to medial ramus and angle.
Closes lower jaw, clenches teeth.
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M. pterygoid lateralis
Originates from lat. greater wing and lat. peterygoid plate to pterygoid fossa of mandible.
Closes lower jaw, clenches teeth.
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