Which action is performed by the splenius capitis?

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Multiple Choice

Which action is performed by the splenius capitis?

Explanation:
When the splenius capitis contracts on one side, it pulls the head to that same side, producing rotation of the head and neck toward that side. If both sides contract together, it helps extend the head and neck. This unilateral rotation toward the same side is the action described, making it the best choice. The muscle isn’t primarily responsible for flexing the vertebral column, compressing abdominal contents, or forming a central tendon (the central tendon is part of the diaphragm, not the splenius capitis).

When the splenius capitis contracts on one side, it pulls the head to that same side, producing rotation of the head and neck toward that side. If both sides contract together, it helps extend the head and neck. This unilateral rotation toward the same side is the action described, making it the best choice. The muscle isn’t primarily responsible for flexing the vertebral column, compressing abdominal contents, or forming a central tendon (the central tendon is part of the diaphragm, not the splenius capitis).

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