20
QuizMultiple Choice

Stability & Range of Motion

Question 20 • Lifetime Fitness (semester)--NEW CREDIT ONLY

Which of the following statements BEST explains why ball-and-socket joints have the greatest range of motion?

Answer
A
The contours of the two bones allow for maximum movement.
B
The even planes of the bones allow full rotation.
C
The two matching surfaces allow for movement in multiple directions.
D
The cup shape of the socket allows for nearly circular motion.

Explanation

A ball-and-socket joint has a rounded bone end that fits into a cup-shaped socket. This arrangement allows the bone to move in many directions and rotate, producing a nearly circular range of motion. Choice D best describes how the socket’s shape contributes to that movement.

AI-written and checked against the verified answer.

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