brachialis muscle
The brachialis (brachialis anticus) is a muscle in the upper arm that flexes the elbow joint. It lies just deep of the biceps brachii, and is a synergist that assists the biceps brachii in flexing at the elbow. It makes up part of the floor of the region known as the cubital fossa. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.
What the brachialis muscle is
The brachialis (brachialis anticus) is a muscle in the upper arm that flexes the elbow joint. It lies just deep of the biceps brachii, and is a synergist that assists the biceps brachii in flexing at the elbow. It makes up part of the floor of the region known as the cubital fossa. [WP,unvetted]. The atlas records it as a muscle at the organ scale in the human body.
Where the brachialis muscle is
It sits in the upper limb, within the muscular system. Positioned deliberately as part of this species body plan.
What the brachialis muscle connects to
The atlas records 5 typed relationships for it, across 4 kinds of connection. a kind of muscle of arm and muscle of shoulder.
Supply and innervation
Innervation: musculocutaneous nerve.
Also called
Also recorded as Casserio's muscle, brachialis, brachialis anticus muscle and musculus brachialis. Searching any of those names reaches this page.
Source
Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001506, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.
- A kind of: muscle of arm and muscle of shoulder.
- Innervated by: musculocutaneous nerve.
- inserts into: coronoid process of ulna.
- originates from: humerus.
Questions
Where is the brachialis muscle?
It sits in the upper limb, within the muscular system. Positioned deliberately as part of this species body plan.
What does the brachialis muscle connect to?
A kind of: muscle of arm and muscle of shoulder.
Is the brachialis muscle the same in other species?
Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.