List of extensors of the human body
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Extension is an anatomical term that refers to 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.
Muscles of extension
Upper limb
- of arm at shoulder[1]
- Axilla and Shoulder
- Latissimus Dorsi
- Posterior Fibres of Deltoid
- Teres Major
- Axilla and Shoulder
- of hand at wrist[3]
- Posterior compartment of the forearm
- Extensor carpi radialis longus
- Extensor carpi radialis brevis
- Extensor carpi ulnaris
- Extensor digitorum
- 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)
- Posterior compartment of the forearm
- of phalanges, at interphalangeal joints[4]
- Lumbricals of the hand
- Dorsal interossei of the hand
- Palmar interossei
- of thumb[5][6]
- Extensor pollicis brevis (proximal phalange)
- Extensor pollicis longus (distal phalange)
Lower limb
Hip
Knee
- of leg at knee (L3-L4)[8]
- Quadriceps
- Rectus femoris muscle
- Vastus medialis
- Vastus lateralis
- Vastus intermedius
- Quadriceps
Toes
- of toes[9][10]
- Extensor hallucis longus
- Extensor digitorum longus
- Extensor digitorum brevis
- Extensor hallucis brevis
See also
- This article uses anatomical terminology; for an overview, see anatomical terminology.
References
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