The Pectoralis Minor muscle is the smallest of the two pectoral (chest) muscles. It works together with Serratus anterior which protracts and rotates the scapula upwards. When the two work together, pure protraction (without rotation) is produced.
Daily uses include pushing a door open. Example strengthening exercises - Pec fly using a resistance band and Chest Press using a resistance band. Example stretches - chest stretch and chest stretch with a partner.
Origin - outer surface of ribs 3-5.
Insertion - coracoid process of the scapula.
Actions - scapula protraction and rotation of the scapula downwards.
Innervation - medial pectoral nerve.