pectoralis minor

The Pectoralis minor is a thin, triangular muscle, situated at the upper part of the chest, beneath the Pectoralis major. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the pectoralis minor is

The Pectoralis minor is a thin, triangular muscle, situated at the upper part of the chest, beneath the Pectoralis major. [WP,unvetted]. The atlas records it as a muscle at the organ scale in the human body.

Where the pectoralis minor is

It sits in the thorax and trunk, within the muscular system. Positioned deliberately as part of this species body plan.

What the pectoralis minor connects to

The atlas records 3 typed relationships for it, across 3 kinds of connection. a kind of pectoral muscle.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the pectoralis minor. 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 pectoralis minor muscle, supracoracoideus, supracoracoideus muscle and musculus pectoralis minor. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001100, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• A kind of: pectoral muscle.
• inserts into: medial border of scapula.
• originates from: rib.

Questions

Where is the pectoralis minor?

It sits in the thorax and trunk, within the muscular system. Positioned deliberately as part of this species body plan.

What does the pectoralis minor connect to?

A kind of: pectoral muscle.

Is the pectoralis minor 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.