Functions of the skeleton Flashcards
Viscous
A thick solution; somewhere between a solid and a liquid.
Concave
Curving inwards.
Convex
Curving outwards.
Why is ‘support’ useful in sport?
Holds body weight or added weight on the body.
Why is ‘reduced friction’ useful in sport?
Reduces injuries.
Why is ‘protection’ useful in sport?
Prevents serious injuries.
Why is ‘mineral storage’ useful in sport?
Maintains bone strength or increases the strength due to osteoblasts.
Why is ‘blood cell production’ useful in sport?
Carrie oxygen so therefore increases oxygen capacity.
Why is ‘attachment for muscles’ useful in sport?
Enhances movement and power in the muscles.
Why is ‘leverage’ useful in sport?
Moves around and uses up the body’s energy stores.
Why is ‘weight bearing’ useful in sport?
Stop muscle and bone strain.
Joints
Where two or more bones meet. There is around 350 joints in the body.
Three types of joints?
Fixed, slightly moveable and synovial (freely moveable).
Joint capsule
Outer sleeve to help hold the bones in place and protect the joints.
Bursa
Small fluid filled sac which provided a cushion between tendons and bone. REDUCES FRICTION BETWEEN TENDONS.
Cartilage
Provides a smooth and slippery covering to stop bones grinding together.
Synovial fluid
Viscous liquid that lubricates joints and reduced friction.
Synovial membrane
Capsule lining that releases synovial fluid.
Ligaments
Holds bones together and keeps them in place.
Function of the skeleton; PROTECTION
Cranium and ribs protect the vital organs.
Function of the skeleton; SHAPE
Gives shape to the body to either make someone tall or short.
Function of the skeleton; SUPPORT
Holds vital organs in place when doing sport, the vertebrae column holds the body upright.
Function of the skeleton; MOVEMENT
Muscles are attached to bones, which are jointed. When muscles contract the bones move.
Function of the skeleton; BLOOD CELL PRODUCTION
Red blood cells carry oxygen.
White blood cells protect against infections.
