Question

Which type of movement would have been possible if
(a) Our elbow had a fixed joint.
(b) We were to have a ball and socket joint between our neck and head.

Answer 1

Answer:

a) If our elbow had a fixed joint, we wouldn't be able to move our hands.

b) If our head and neck had a socket and a joint, we wouldn't be able to rotate our neck in 180 degrees. we could only do 90 degree angle.

Explanation: