When standing in the anatomical position, if you raise your arm by flexing the shoulder joint, and keep the elbow joint fully extended, what form of motion does the arm undergoA) rotational motionB) rectilinear motionC) curvilinear motionD) general motion
Question
When standing in the anatomical position, if you raise your arm by flexing the shoulder joint, and keep the elbow joint fully extended, what form of motion does the arm undergoA) rotational motionB) rectilinear motionC) curvilinear motionD) general motion
Solution
The motion described here is a rotational motion. In the anatomical position, when you raise your arm by flexing the shoulder joint while keeping the elbow joint fully extended, your arm is moving around a fixed point (the shoulder joint). This type of movement, where an object moves in a circular path around a fixed point, is known as rotational motion. So, the correct answer is A) Rotational motion.
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