• Palmar interossei
  • Adductor pollicis
MuscleActionOriginInsertionInnervationBlood supply
Palmar interossei- Adduct digits toward axial line at metacarpophalangeal joints- Sides of metacarpals- Extensor expansions of digits and bases of proximal phalanges of digits 2-5- Deep branch of ulnar nerve: C8,T1
- Palmar metacarpal arteries
Adductor pollicis- Adducts thumb - Oblique head: Capitate and bases of metacarpals 2 and 3
- Transverse head: metacarpal 3
- Base of proximal phalanx and Extensor expansion of thumb- Deep branch of ulnar nerve: C8,T1- Deep Palmar arterial arch