Brachialis at a glance
- What it is
- The main flexor of the elbow, lying deep to biceps brachii.
- Location
- Origin: distal half of the anterior surface of the humerus. Insertion: coronoid process and tuberosity of the ulna.
- Function
- Flexes the forearm at the elbow in all positions of pronation and supination.
- Body system
- Muscular · paired (left and right)
- FMA ID
- FMA37668 (Foundational Model of Anatomy)
Key facts
- Innervation: musculocutaneous nerve (C5–C6), with a small lateral part from the radial nerve (C7)
- Blood supply: brachial and radial recurrent arteries
Structures next to the brachialis
The nearest named structures in the 3D model, measured from the centre of each part:
- Middle collateral branch of deep brachial artery · cardiovascular
- Superior ulnar collateral artery · cardiovascular
- Medial head of triceps brachii · muscular
- Deep brachial artery · cardiovascular
- Brachial artery · cardiovascular
- Inferior ulnar collateral artery · cardiovascular
- Lateral head of triceps brachii · muscular
- Median cubital vein · cardiovascular
- Long head of biceps brachii · muscular
- Cephalic vein · cardiovascular
References
- Foundational Model of Anatomy: Brachialis (FMA37668). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
Related anatomy
Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.