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5 Cards in this Set

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What are the two origins of the iliocostalis muscle?
1) Posterior iliac crest
2) Posterior suface of sacrum
What is the insertion of the iliocostalis muscle?
(Lumborum, thoracis, cervicis): fibers run superiorly to angles of lower ribs and cervical transverse processes
What innervates the iliocostalis muscle?
dorsal primary rami of spinal nerves C4-S5
What four arteries supply the iliocostalis muscle?
Segmentally: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa.
What are the main actions of the iliocostalis muscle?
extends and laterally bends both the trunk and neck