AQA GCSE Physical Education · 8582
Paper 1
A joint, such as the elbow or knee, that mainly allows bending and straightening: flexion and extension.
Revise: Skeletal structureA hinge joint, such as the elbow or knee, mainly allows bending and straightening. Bending decreases the angle at the joint and is called flexion; straightening increases the angle and is called extension. Preparing to shoot in basketball involves elbow flexion, while straightening the knee to kick a ball involves extension.
- Revise: Freely movable joints
A freely movable joint that allows movement mainly in one plane, rather like a door opening and closing.