Which muscle provides a guide to the position of the radial

Which muscle provides a guide to the position of the radial artery at the wrist fr taking the pulse?

Solution

answer is D this Flexor Carpi Radialis which runs diagonally across forearm; midway, its fleshy belly replaced by a flat tendon that becomes cordlike at wrist, O-medial epicondyle of humerus I-base of second and 3rd metacarpals, insertion tendon easily seen and provides guide to position of radial artery (Used for pulse taking) at wrist