Pectoralis Minor

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Subclavius and Pectoralis minor schematic¹
1: Subclavius
2: Pectoralis Minor

Subclavius and Pectoralis minor (Anterior view)¹

Muscle	Origin	Insertion	Innervation	Action
Pectoralis minor	3-5 ribs	Coracoid process	Medial pectoral n. C8 - T1	Scapula: Depression, Downward rotation Respiration: Assists in respiration

Origin

3rd to 5th ribs¹

Insertion

Coracoid process¹

Innervation

Medial Pectoral n. (C8, T1)¹

Action

• Scapulothoracic: Depression, protraction, downward rotation¹
• Assists in respiration¹

References

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.