Palmaris Brevis

• O (origin):

  • Medial border of palmar aponeurosis
  • Front of flexor retinaculum

  A) Palmaris Brevis

  
• R (direction):

  • Medially

  A) Palmaris Brevis

  
• I (insertion):

  • Skin on medial border of hand

  A) Palmaris Brevis

  
• A (action):

  • Wrinkles skin on medial aspect of hand
  • Assists thumb in producing a good grip

  A) Palmaris Brevis

  
• NS (nerve supply):

  • Superficial branch ulnar nerve (C7 - T1)

  A) Palmaris Brevis