Medial Pectoral Nerve

Description

Medial pectoral nerve

Illustration of the medial and lateral pectoral nerve

Name

• Medial Pectoral Nerve
• Nervus Pectoralis Medialis

General

• Motor nerve arising from the medial cord of the brachial plexus
• Innervates pectoralis minor, sternocostal head of pectoralis major

Gross Anatomy

• Originates on the medial cord of the brachial plexus, fibers from C8 and T1
• Posterior to the axillary artery, then passes medially to the second part
• Runs anteriorly between axillary arery and vein
• Commonly receives a branch from the lateral pectoral nerve, forms ansa pectoralis
• Here, it penetrates pectoralis minor
• Some fibers continue through to supply lower portion of pectoralis major

Innervations

• Pectoralis Minor
• Pectoralis Major (sternocostal head)

---

Clinical Significance

• Needs to be updated

---

See Also

• Shoulder Anatomy Main
• Neuropathies Main

---