Moving the hand from palm up to palm down with the elbow flexed at 90 degrees _____.

Moving the hand from palm up to palm down with the elbow flexed at 90 degrees _____.

Moving the hand from palm up to palm down with the elbow flexed at 90 degrees _____.


a. adducts the ulna

b. internally rotates the radius

c. internally rotates the humerus

d. flexes the ulna


Answer: b. internally rotates the radius


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