Flexor Pollicis Longus - Muscle Physiology & Functional Anatomy

Anatomy

Origin:

• Anterior surface of radius below anterior oblique line & adjacent interosseous membrane
  

Insertion

• Base of distal phalanx of thumb

Major Arteries:

• Anterior interosseus artery

Neural Innervation:

• Anterior interosseous nerve (C7-C8)

Trigger Points: 

Physiology

Concentric Functions:

• Flexes distal phalanx of thumb

• Assists in wrist flexion (when thumb is fixed)
  

Eccentric Functions:

Isometric Function:

Related Muscles

Antagonist:

Exercises:

• Forearms Exercises

More Images of the Flexor Pollicis Longus Muscle

More Information about the Flexor Pollicis Longus Muscle

The flexor pollicis longus muscle lies in the same plane as the flexor digitorum profundus and is only found in humans (absent or rudimentary in primates).

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