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Anatomy
Anatomy
Brachialis
Evidence-grounded — sourced from Fysiqal's fitness knowledge graph· 1 min read
armelbow-flexorbrachialis
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In one line
The only pure flexor of the elbow joint; pulls on the ulna, which does not rotate.
Detail
The brachialis pulls on the ulna, which does not rotate, thus making it the only pure flexor of the joint (Ellison, 1991). Its function is flexion. A neutral-position hammer curl brings the brachialis and brachioradialis into play. It contracts (with the biceps brachii and brachioradialis) during elbow flexion, with the triceps reciprocally innervated to relax.
Key facts
- The only pure flexor of the elbow joint (pulls on the ulna, which doesn't rotate).
- Function: flexion.
- Brought into play by the neutral-grip hammer curl.
Connections
- biceps-brachii — strongest elbow flexor alongside it.
- brachioradialis — also engaged in the hammer curl.
- flexion — its sole action.
- hammer-curl — training exercise.
SourceReference manual
p.232p.512
Cited authorities in source: Ellison (1991).
Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.
Explore related topics
Atlas Connections
Biceps BrachiiClosely related
The strongest flexor of the elbow joint (long and short heads); flexes the elbow, supinates the forearm, and weakly flexes the shoulder; a 2-joint muscle (ROM 135°).BrachioradialisClosely related
A forearm flexor that flexes the elbow and both supinates and pronates the forearm.Flexion
Bending a joint so the bones come closer together.Hammer Curls
Neutral-grip ("hammer") curl that targets the long head of the biceps and brings the brachialis and brachioradialis strongly into play.