Functions of the back muscles

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Last updated 4:03 PM on 7/9/26
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7 Terms

1
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What is the function of the trapezius?

elevates, retracts, and rotates scapula; lower fibers depress scapula

2
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What is the function of the latissimus dorsi?

extends, adducts, and medially rotates humerus

3
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What is the function of the levator scapulae?

elevates scapula medially, inferiorly rotates glenoid cavity

4
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What is the function of the serratus posterior superior?

elevates ribs

5
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What is the function of the serratus posterior inferior?

depresses ribs

6
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What is the function of the erector spinae?

extends and laterally bends vertebral column and head

7
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What is the function of the deltoid?

medial/internal rotation of the arm