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Category - Sciences

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The sternocleidomastoid performs what isolated functions?

Concentrically accelerates cervical flexion
Concentrically accelerates abduction of the arm
Concentrically accelerates cervical rotation
A and C

Explanation

Answer - D - The sternocleidomastoid concentrically accelerates cervical flexion and rotation. Though all muscles are interconnected and interoperable with one another, this muscle has no direct impact on the movement of the arm.

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