Question

Why can we move our arms in circular motion but not our elbows?

Answer 1

Answer:

EXPLANATION: We can move our arms in circular motion but not our elbow because the joints at the elbow are the ball and the socket joint whereas the joints that are present in our elbow is the hinge joint. The ball and the socket joints can be rotated to 360 degree.

Answer 2

Answer:

We can move our arms in a circular motion, but not our elbows, since the elbow joints are ball and socket joints, whereas the hinge joints are present in our elbows. The socket and ball joints can be rotated 360 degrees.

Explanation:

• Because the articulating ends of the bones come together like a hinge on a door, movement is limited to flexion and extension, or movement in just one direction, in hinge joints.
• The elbow joint is an example of a joint that only allows movement in one direction, namely forward.
• As a result, our elbow is unable to move rearward.