A prime mover of arm abduction is the

Name: A prime mover of arm abduction is the
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Quizplus · Accepted Answer

The deltoid muscle is the prime mover of arm abduction, meaning it is primarily responsible for lifting the arm away from the body. The other muscles listed (sternocleidomastoid, trapezius, and pectoralis major) are involved in various movements of the shoulder and neck, but are not the primary movers of arm abduction.

A Prime Mover of Arm Abduction Is the