infraspinatus muscle

The infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa. The infraspinatus is a muscle of the rotator cuff. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the infraspinatus muscle is

The infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa. The infraspinatus is a muscle of the rotator cuff. [WP,unvetted]. The atlas records it as a muscle at the organ scale in the human body.

Where the infraspinatus muscle is

It sits within the muscular system. Positioned deliberately as part of this species body plan.

What the infraspinatus muscle connects to

The atlas records 8 typed relationships for it, across 6 kinds of connection. part of rotator cuff.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the infraspinatus muscle. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as infraspinatus, infrascapularis and musculus infraspinatus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001477, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: rotator cuff.
• A kind of: muscle of shoulder, pectoral complex muscle and skeletal muscle organ, vertebrate.
• inserts into: ventral tubercle of humerus.
• originates from: scapula.
• connects: infraspinatus tendon.
• contains: infraspinatus tendon.

Questions

Where is the infraspinatus muscle?

It sits within the muscular system. Positioned deliberately as part of this species body plan.

What does the infraspinatus muscle connect to?

Part of: rotator cuff.

Is the infraspinatus 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.