Are you in Canada? Click here to proceed to the HK Canada website.

For all other locations, click here to continue to the HK US website.

Human Kinetics Logo

Purchase Courses or Access Digital Products

If you are looking to purchase online videos, online courses or to access previously purchased digital products please press continue.

Mare Nostrum Logo

Purchase Print Products or eBooks

Human Kinetics print books and eBooks are now distributed by Mare Nostrum, throughout the UK, Europe, Africa and Middle East, delivered to you from their warehouse. Please visit our new UK website to purchase Human Kinetics printed or eBooks.

Feedback Icon Feedback Get $15 Off

Muscles attaching the upper limb to the trunk

This is an excerpt from Pocket Atlas of Skeletal Muscles, The by Chris Jarmey.

Pectoralis Major

Pectoralis Major
Latin, pectoralis, relating to the chest; major, larger.

Origin
Clavicular head
Anterior surface of medial half of clavicle.
Sternocostal head
Anterior surface of sternum. First seven costal cartilages. Sternal end of sixth rib. Aponeurosis of external oblique.

Insertion
Lateral lip of intertubercular sulcus of humerus.

Nerve supply
Medial and lateral pectoral nerves: clavicular head: C5, 6; sternocostal head: C6–8, T1.

Blood supply
Pectoral branch of thoracoacromial trunk and lateral thoracic artery
(from axillary artery).

Action
Flexion, adduction, and medial rotation of arm at glenohumeral joint.
Clavicular head
Flexion of extended arm.
Sternocostal head
Extension of flexed arm.

More Excerpts From Pocket Atlas of Skeletal Muscles