When Flexing the Elbow,the Biceps Brachii,brachioradialis,and Brachialis Are the Three

question 17

Multiple Choice

When flexing the elbow,the biceps brachii,brachioradialis,and brachialis are the three major agonists recruited to perform this movement because all cause flexion at the elbow. However,the biceps also cause supination,an undesired movement. Therefore another muscle acting as a ________,causing ________ must be recruited to prevent the undesired motion.

• A)stabilizer; extension
• B)neutralizer; extension
• C)stabilizer; pronation
• D)neutralizer; pronation

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