Flexor pollicis brevis muscle

Last revised by Daniel MacManus on 2 Aug 2021

The flexor pollicis brevis muscle is a short muscle of the thenar eminence located distal to the abductor pollicis brevis. It is one of the intrinsic muscles of the hand. The muscle is composed of a superficial head and a variably sized deep head.

Summary

  • origin:
  • insertion: proximal phalanx of the thumb
  • action: flexes thumb at metacarpophalangeal joint
  • arterial supply: superficial palmar arch
  • innervation:

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.