flexion
physiology
Quick Summary
Flexion is a physiological movement that decreases the angle between two body parts, essentially bending them. This occurs at a joint, such as bending the elbow or knee. It is the opposite of extension, which increases the angle between body parts. Flexor muscles are responsible for this action, contracting to decrease the angle between bones at a joint. Examples include bending the fingers or toes. The term can also refer to the act of bending or a part that is bent.123
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