How Some Bones Make Us Move.docx
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7/21/2019 How Some Bones Make Us Move.docx
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How Some Bones Make Us Move
1. Some bones can move because they areconnected by movable joints. Some bones areconnected by immovable joints.2. Ball-and-socket joints allow free movement.3. Hinge joints allow movement in only onedirection.
. !liding joints allow movement in differentdirections.". #ivot joint allows a $art of the body to turnwithout making the $art attached to it move.%. &artilage is a smooth' tough material that$rotects the ends of the bones. (t covers theends of the bones that move. (t serves as acushion between two bones.). Bones that move are held in $lace byligaments. *igament is a tough material thatconnects bones together at the joints.
+. ,he synovial fluid serves as a lubricant to$revent wear and tear of bones.
ball-and-socket joint
hinge joints
gliding joint
pivot joint
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