Skeleton And Muscular System Flashcards
How many bones in the body
Adult 206
Children way more
Cartilage
acts as a shock absorber allow limited movement stop bones rubbing off each other.
Joint
To bones meet
Fused joint
Do not allow bones to move eg skull
Synovial joints
Allow bones to move
- ball and socket
- hinge joint
Ball and socket joint
Allows movement in several directions eg hip shoulder
Hinge joint
Allows movement in one plane only knee elbow jaw knuckles
Synovial fluid
Acts as a shock absorber allowing bones to move
Ligaments
Tough elastic fibres hold bones together
Tendon
Anchor muscle to bone
Antagonistic pairs
Biceps contract to pull up the lower arm triceps pull the arm down
Functions of the skeleton
To support the body to allow movement and to protect organs