List of extensors of the human body - Reference.org

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List of extensors of the human body

In anatomy, extension is a movement of a joint that increases the angle between two bones or body surfaces at a joint. Extension usually results in straightening of the bones or body surfaces involved. For example, extension is produced by extending the flexed (bent) elbow. Straightening of the arm would require extension at the elbow joint. If the head is tilted all the way back, the neck is said to be extended.

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Extensor muscles

Upper limb

of arm at shoulder¹
- Axilla and shoulder
of forearm at elbow²
- Posterior compartment of the arm
  - Triceps brachii
  - Anconeus
of hand at wrist³
- Posterior compartment of the forearm
of phalanges, at all joints
- Posterior compartment of the forearm
  - Extensor digitorum
  - Extensor digiti minimi (little finger only)
  - Extensor indicis (index finger only)
of phalanges, at interphalangeal joints⁴
of thumb⁵
- Extensor pollicis brevis (proximal phalange)
- Extensor pollicis longus (distal phalange)

Lower limb

Hip

of thigh/femur at hip⁶
- Gluteus maximus
- Posterior compartment of thigh

Knee

of leg at knee (L3-L4)⁷
- Quadriceps

Toes

of toes⁸

See also

This article uses anatomical terminology.

List of flexors of the human body

References

Shoulder Articulations, ExRx.net http://www.exrx.net/Articulations/Shoulder.html#anchor764495 ↩
Elbow Articulations, ExRx.net http://www.exrx.net/Articulations/Elbow.html#anchor764495 ↩
Wrist Articulations, ExRx.net http://www.exrx.net/Articulations/Wrist.html#anchor261877 ↩
Finger Articulations, ExRx.net http://www.exrx.net/Articulations/Fingers.html#anchor783765 ↩
Thumb Articulations, ExRx.net http://www.exrx.net/Articulations/Thumb.html#anchor206622 ↩
Hip Articulations, ExRx.net http://www.exrx.net/Articulations/Hip.html#anchor845621 ↩
Knee Articulations, ExRx.net http://www.exrx.net/Articulations/Knee.html#anchor22459 ↩
Foot Articulations, ExRx.net http://www.exrx.net/Articulations/Toes.html#anchor231444 ↩