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The Skeletal and Muscular Systems (The Parts of the Human Skeleton…
The Skeletal and Muscular Systems
Functions of the Skeleton
To support the body
To allow movement
To protect the internal parts of the body
The Parts of the Human Skeleton
Joints
Some joints allow movement
Some joints don't move
Help to protect the body
Where bones meet
Muscles
Made of protein
Can contract
Attached to bones on either side of a joint
Function is to allow movement
When a muscle contracts it pulls on one of the bones to which it is attached
Antagonistic pairs
Two muscles which carry out opposite effectss
One contracts while the other lengthens
Tendons
When a muscle contracts the pull of the muscle is passed to the bone through a tendon
Join muscle to bone
Ligaments
Prevents joints from being damaged by reducing the amount of movement between bones at a joint
Join bone to bone
Types of joints
Fused joints
Freely moving joints
Ball and socket joints
Hinge joints