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15 Cards in this Set
- Front
- Back
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what muscles make up the rotator cuff of the shoulder
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subscapularis
supraspinatus infraspinatus teres minor |
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what three muscle groups make up the erector spinae muscles
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iliocostalis
longissimus spinalis |
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what are the names of the three iliocostalis erector spinae muscles?
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iliocostalis lumborum
iliocostalis thoracis iliocostalis cervicis |
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what do the iliocostalis lumborum,
iliocostalis thoracis, and iliocostalis cervicis do, respectively? |
extend lumbar, thoracic, and cervical regions of vertebral column, respectively.
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what are the names of the three longissimus erector spinae muscles?
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longissimus thoracis,
longissimus cervicis and longissimus capitis |
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what do the longissimus thoracis, longissimus cevicis, and longissimus capitus erector spinae muscles do?
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(respectively): extend thoracic region, extends/laterally flexes cervical region, and extends head or acting separately, turns face toward that side.
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what does the spinalis thoracis erector spinae muscle do?
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extends vertebral column.
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where are the suboccipital muscles
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immediately inferior to base of skull
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what do the suboccipital muscles connect?
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atlas and axis to each other and the skull
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what is the action of the suboccipital muscles
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flex or extend the skull via rocking motion of occipital condyles on atlas (i.e. nodding), and rotate the skull and atlas upon the axis - turns face towards same side as muscle contracting.
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what nerves ennervate the suboccipital muscles?
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dorsi rami of first cervical nerves
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what is the function of the anterior vertebral muscles?
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maintain balance of head and cervical spine. also flex head and neck.
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what muscles are part of the lateral vertebral muscles?
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scalene and sternocleidomastoids.
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what are the three scalene muscles?
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scalenus anterior, scalenus medius, scalenus posterior.
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what do the scalenus muscles do?
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when head fixed position, scalenes elevate 1&2 ribs. when thorax fixed & head free, scalenes flexed one side bend cervical vertebral column to one side. both sets flexed flexes vertebral column
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