Question

Which type of movement would have been possible if
(a) our elbow had a fixed joint. [1 mark]
(b) we were to have a ball and socket joint between our neck and head. [1 mark]

Answer 1

(a) Only those types of movements are possible which can be done without bending our arm like pointing to something etc. (1 mark)
(b) We would be able to rotate our head at 360°. (1 mark)