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18 Cards in this Set
- Front
- Back
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Origin: zygomatic arch
Insertion: mandible Action: elevates mandible, closes jaw |
Masseter
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Origin: temporal lines of parietal
Insertion: coronoid process of mandible Action: elevates mandible, closes jaw |
Temporalis
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Origin: from inferior surface of mandible at chin
Insertion: hyoid Action: depresses mandible, opening mouth,and/or elevates larynx |
Digastric: Anterior Belly
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Origin: from mastoid region of temporal bone
Insertion: hyoid Action: depresses mandible, opening mouth,and/or elevates larynx |
Digastric: Posterior Belly
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Origin: mylohyoid line of mandible
Insertion: median connective tissue band (raphe) that runs to hyoid bone Action: elevates floor of mouth, elevates hyoid bone,and/or depresses mandible |
Mylohyoid
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Origin: clavicle & manubrium
Insertion: hyoid bone Action: depresses hyoid bone and larynx |
Sternohyoid
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Origin: attaches to sternal end of clavicle
Insertion: mastoid region of skull, lateral portion of superior nuchal line Action: together flex neck, alone bend side to side |
Sternocleidomastoid: Clavicular Head
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Origin: attaches to manubrium
Insertion: mastoid region of skull, lateral portion of superior nuchal line Action: together flex neck, alone bend side to side |
Sternocleidomastoid: Sternal Head
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Origin: cervical & thoracic vertebrae
Insertion: mastoid process,occipital bone, superior cervical vertebrae Action: together extend neck, alone rotates & flexes side to side |
Splenius capitis
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Origin: thoracic & lumbar vertebrae
Insertion: spinous process of thoracic vertebrae Action: extends vertebral column |
Spinalis Thoracis
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Origin: transverse & costal processes of cervical vertebrae C2-C7
Insertion: superior surface of ribs 1-2 Action: elevates ribs, flexes neck, rotates and bends neck |
Scalenes (anterior, middle & posterior)
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Origin: inferior border of each rib
Insertion: superior border of more inferior rib Action: elevates ribs |
External Intercostals
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Origin: superior border of each rib
Insertion: inferior border of the more superior rib Action: depresses ribs |
Internal Intercostals
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Origin: xiphoid process, ribs 7-12 & anterior surfaces of lumbar vertebrae
Insertion: central tendinous sheet Action: contraction expands thoracic cavity, compresses abdominopelvic cavity |
Diaphragm
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Origin: ribs 5-12
Insertion: extend to linea alba & iliac crest Action: compresses abdomen; depresses ribs; laterally flexes or rotates vertebral column |
External Oblique
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Origin: lumbodorsal fascia & iliac crest
Insertion: inferior surfaces of ribs 9-12, costal cartilages 8-10, linea alba & pubis Action: compresses abdomen; depresses ribs; laterally flexes or rotates vertebral column |
Internal Oblique
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Origin: cartilages of ribs 6-12, iliac crest, lumbodorsal fascia
Insertion: linea alba, pubis Action: compresses abdomen |
Transverse Abdominis
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Origin: superior surface of pubis, around symphysis
Insertion: inferior surfaces of cartilages (ribs 5-7) & xiphoid process Action: depresses ribs, flexes vertebral column, compresses abdomen |
Rectus Abdominis
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