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pectoralis minor
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Detailed anatomical illustration of the human upper arm from the front, showing the superficial muscles, major nerves, and tendons. Key structures like the deltoid, biceps brachii, brachialis, and associated nerves are labeled.
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pectoralis minor

anatomy
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Detailed anatomical illustration of the human upper arm from the front, showing the superficial muscles, major nerves, and tendons. Key structures like the deltoid, biceps brachii, brachialis, and associated nerves are labeled.
Human muscle system Muscles of the upper arm.

The pectoralis minor is a muscle located in the chest, largely beneath the pectoralis major. It originates from the middle ribs and attaches to the scapula (shoulder blade).1

The primary actions of the pectoralis minor are to draw the shoulder forward and downward. This muscle is part of the pectoral girdle, which connects the arm to the axial skeleton and provides structural support for the shoulder. The pectoral girdle consists of the clavicle (collarbone) and the scapula (shoulder blade).12

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2 Britannica Sources
  1. pectoralis muscle
  2. pectoral girdle

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