Which type of movement would have been possible if: a) the joints in our knees and elbows had a fixed joint. b) there was a ball and socket joint between our neck and head instead of pivot joint.
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Hinge joint; 3 Ball and socket joint; 4 Pivot joint; 5 Fixed joints ... We can move our head ,arms ,hands ,legs and ...
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Answer:
a) It would not be possible to bendor fold our arms.
b) It would be possible to rotate our head 360 degree .
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