brachialis muscle
Sign in to saveAlso known as brachialis, brachialis anticus
muscle of the upper limb
Key facts
- Origin
- Anterior surface of the humerus , particularly the distal half of this bone
- Insertion
- Coronoid process and the tuberosity of the ulna
- Artery
- Radial recurrent artery , brachial artery
- Nerve
- Musculocutaneous nerve (C5-C7) and radial nerve (C5, C6)
- Actions
- Flexion at elbow joint
- Latin
- musculus brachialis
- Ta98
- A04.6.02.018
via Wikipedia infobox
Wikidata facts
- Image
- Brachialis muscle - animation03.gif
Show 4 more facts
- Commons category
- Brachialis muscles
- innervated by
- radial nerve
- muscle insertion
- Tuberosity of the ulna
- arterial supply
- radial recurrent artery
via Wikidata · CC0
~3 min read
Encyclopedic overview
The brachialis (also brachialis anticus or Casserio muscle) is a muscle in the upper arm that flexes the elbow. It lies beneath the biceps brachii, and makes up part of the floor of the region known as the cubital fossa (elbow pit). It originates from the anterior aspect of the distal humerus; it inserts onto the tuberosity of the ulna. It is innervated by the musculocutaneous nerve, and commonly also receives additional innervation from the radial nerve. The brachialis is the prime mover of elbow flexion generating about 50% more power than the biceps.
Structure
Excerpted from Wikipedia’s “brachialis muscle” article, available under the CC BY-SA 4.0 licence.