List of extensors of the human body

Updated on Oct 06, 2024

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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.

Upper limb

of arm at shoulder

Axilla and Shoulder

Latissimus Dorsi

Posterior Fibres of Deltoid

Teres Major

of forearm at elbow

Posterior compartment of the arm

Triceps Brachii

Anconeus

of hand at wrist

Posterior compartment of the forearm

Extensor carpi radialis longus

Extensor carpi radialis brevis

Extensor carpi ulnaris

Extensor digitorum

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 joints

Lumbricals of the hand

Dorsal interossei of the hand

Palmar interossei

of thumb

Extensor pollicis brevis (proximal phalange)

Extensor pollicis longus (distal phalange)

Hip

of thigh/femur at hip

Gluteus maximus

Posterior compartment of thigh

Biceps femoris

Semitendinosus

Semimembranosus

Knee

of leg at knee (L3-L4)

Quadriceps

Rectus femoris muscle

Vastus medialis

Vastus lateralis

Vastus intermedius

Toes

of toes

Extensor hallucis longus

Extensor digitorum longus

Extensor digitorum brevis

Extensor hallucis brevis

References

List of extensors of the human body Wikipedia

(Text) CC BY-SA

Contents

Upper limb

Hip

Knee

Toes

References