Question

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

Answer 1

1. Ball and socket joint, also called sheproidal joint ,in vertebrate anatomy, a joint in which the round surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint

2. there is only one movable joint in the skull. that is the joint connecting the lower jaw or, mandible, to the rest of the skull

3. our elbow cannot move backwards because it has a hinge joint which allows the movement in one plane only

Answer 2

Answer:

Ball & Socket Joint- The joint present in our Arm and shoulders are called this joint connect our Arm with our shoulders.

:- Only lawer jaw is movable in our skull .

:- Because the ball and socket joint don't allow the arm to move backwards

Explanation:

HOPE IT HELP YOU

MARK ME AS BRAINLIST