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. Extensor muscles 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) Lower limb 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 See also List of flexors of the human body References Anatomical terms of motion