Serratus Anterior - Muscle Physiology & Functional Anatomy

Serratus Anterior Muscle

 

Anatomy

 

Origin:

  • Fleshy slips from the outer surface of upper 8 or 9 ribs

Insertion:

  • Costal aspect of medial margin of the scapula



Major Arteries:

  • Upper part of lateral thoracic artery

  • Lower part of thoracodorsal artery

 

Neural Innervation:

  • Long thoracic nerve (from roots of brachial plexus C5, 6, 7)

 

Trigger Points:

Trigger Points of the Serratus AnteriorSerratus Anterior Trigger Points

 

Physiology

 

Concentric Function:

  • Abduction (protraction) & upward rotation of the scapula

 

Eccentric Functions:

  • Decelerates dynamic scapular retraction

 

Isometric Function:

  • Helps stabilize the scapulo-throacic joint

 

Related Muscles

 

Antagonists:

 

Exercises:

 

 

 


More Images of the Serratus Anterior Muscle

Serratus Anterior Muscle

Serratus Anterior and Deep Muscles


More Information about the Serratus Anterior Muscle

The serratus anterior muscle can be seen

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