Science
the hand moves because lots of parts are working together.
bones
joints
muscles
tendons
ligaments
there are 3 bones in each finger but the thumb has 2 there are 5 bones in the palm.
bones provide structure and support .
where two bones meet is called a joint and joints allow movement between bones.
ligaments attach bones together they allow movement in certain directions only.
there are no muscles in the finger but there is muscles in the palm and forearm.
tendons attach bones to muscles.
long tendons run from the tip of our finger down to our muscles.
the muscles then move our fingers by contracting and relaxing.
as the muscles contracts it pulls on the tendons making our fingers curl down.
Well done Camryn, you have explained the parts of the hand well. Next time, it would be awesome if you showed a picture to support your explanation :)
ReplyDelete