Extension (kinesiology)

The extension (from Latin extensio " stretching ") is the extension of a joint. The opposite movement is called flexion.

When you jump and wrist extension ( raising the foot or finger tip) in humans is commonly referred to as dorsiflexion. In the spine, the term is most often used reclination.

If a body part overstretched, then one speaks of a hyperextension (eg the knee joint as Genu recurvatum ).

As extensor or Strecker is called a skeletal muscle, which undergoes a stretching of a joint. In some anatomical muscle names, especially in the muscles of the forearm and lower leg, the term is explicitly ago as the second part of the name, eg, extensor carpi ulnaris ( "elle -sided extensor muscle of the wrist ").

• Skeletal muscle
• Motor activity