Question

4 Answer the following
(a) What is a ball and socket joint?
Which of the skull bones are movable
Id Why can our elbow not move backwards?​

Answer 1

Answer:

This makes the bone to rotate freely. For example, bones of hip and shoulder can move in all directions due to ball and socket joints. (b) Lower jaw bone (Mandible bone) is the only skull bone which is movable. (c) Our elbow cannot move backwards because it has a hinge joint which allows the movement in one plane only.