Skeletal System Physical Education GCSE

What are the 3 function of the skeletal system and explain each.

• Support - the skeletal system give the body it's framework which gives it shape and effects the compostion and the frame size of the body.
• Movement - where bones meet, they form joints, these act as levels. Tendons attatch bones to muscles which allows the body to perform a variety of movements.
• Protection - The skeletal system protects the organs.
  

What are the 3 types of joints and what are hinge joints and ball and socket joints?

3 Types of joints

• Immovable/fixed/fiborous
• Slightly moveable/cartilaginous
• Freeley moveable/synovial

Hinge and ball +socket joints

• A hinge joint - allows a joint to open until it's straight. 
• A ball and socket joint - one bone has a ball which fits into the socket onf another bone.
  

What are the movment possibilities of the skeletal system?

• Flexion - decreasing the angle at a joint
• Extension - increasing the angle at a joint
• Abduction - movement away from the midline of the boy
• Aduction - movement towards the midline of the body
• Rotation - Movement around the midline of the body.
  

What are the two effects of exercise?

• 1) Increased bone density - the body helps the bone get heavier through exericse when it gets stronger
• 2) Ligaments and tendons become thicker and stronger - that increases joint flexibility and the power in the movement.
  

What are simple and compound injuries and what is RICE?

• Simple/closed - where the bone remains under the skin.
• Compound/open - when the bone rips through the surface of the skin.

RICE = Rest, ice, compression and elevation and is used for bone fracture.