pectoralis minor

Musculus pectoralis minor

In 3 atlases

human chest muscle that protracts the shoulder

Source: Wikidata · Licence: CC0-1.0

Description from Wikidata (https://www.wikidata.org/), available under CC0 1.0 (https://creativecommons.org/publicdomain/zero/1.0/).

Origin: third rib, fourth rib, fifth rib
Insertion: coracoid process
Action: medial rotation of the pectoral girdle, protraction of the pectoral girdle
Innervation: medial pectoral nerve
Arterial supply: thoraco-acromial artery, superior thoracic artery
Venous drainage: pectoral veins