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DAA Exam 2 Practice

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Which of the following is a superficial intrinsic back muscle?
Correct Answer:
splenius capitis
Explanation:
The muscles of the back are organized by depth from the surface: superficial, intermediate, and deep intrinsic layers. The superficial intrinsic back muscles sit closest to the skin and fascia; splenius capitis is in this superficial layer, lying on top of deeper muscles and helping to extend and rotate the head. The other options belong to the deeper transversospinalis group, which includes muscles that span multiple vertebrae to stabilize and fine-tune movements. Semispinalis capitis, rotatores, and multifidus are all deeper back muscles involved in more nuanced stabilization and control of the spine. Because splenius capitis sits in the superficial layer, it is the superficial intrinsic back muscle among these options.

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