Question

we can move our arms in a circular motion but not our knees. Give reason

Answer 1

Explanation:

• is because the shoulder joints are ball and socket, that means it can be moved in all directions.
• While the joints at our knee are hinge joints, which means they can be moved only in two directions-to and fro.

Answer 2

Explanation:

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.plz mark as brainlist