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5 Cards in this Set
- Front
- Back
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What is the origin of the longissimus (erector spinae) muscle?
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Transverse process at inferior vertebral levels (i.e lumbosacral)
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What are the two insertions of the longissimus (erector spinae) muscle?
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(Thoracis, cervicis, and capitis):
1) transverse process at superior vertebral levels (i.e. thoracocervical) 2) mastoid process |
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What innervates the longissimus (erector spinae) muscle?
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Dorsal primary rami of spinal nerves C1-S1
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What four arteries segmentally supply the longissimus muscle?
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SEGMENTALLY:
1) deep cervical a. 2) posterior intercostal aa 3) subcostal aa 4) lumbar aa. |
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What are the main actions of the longissimus muscle?
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extends and laterally bends the trunk, neck and head
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