Flexor Pollicis Longus

• O (origin):

  • Anterior surface of radius (inferior to anterior oblique line and superior to pronator quadratus)
  • Adjacent interosseus membrane

  A) Flexor Pollicis Longus

  
• R (direction):

  • Distally

  A) Flexor Pollicis Longus

  
• I (insertion):

  • Palmar surface of base of distal phalanx of thumb

  A) Flexor Pollicis Longus

  
• A (actions):

  • Flexion of all the joints it crosses (Interphalangeal, Metacarpophalangeal and wrist joints)

  A) Flexor Pollicis Longus

  
• NS (nerve supply):

  • Median Nerve (C5 - T1)

  A) Flexor Pollicis Longus