Flexion makes the joint angle smaller, bringing two body parts closer together. Examples of flexion include: Extension makes the joint angle larger, moving two body parts farther away from each other.

Hinge joints allow flexion and extension only. Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl.

Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl. Extension – straightening a joint. This occurs when the ...