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12 Cards in this Set

  • Front
  • Back
Abductor Pollicis Brevis
O: flexor retinaculum, tubercle of the scaphoid, tubercle of trapezium
I: radial side – base of the proximal phalanx of the thumb
N: median – recurrent branch
A: abducts thumb at the carpometacarpal and metacarpophalangeal joints
Flexor Pollicis Brevis
(Superficial Portion)
O: flexor retinaculum, tubercle of the trapezium, trapezoid and capitate
I: radial side – base of proximal phalanx
N: median – recurrent branch
A: flexion of proximal phalanx at the metacarpophalangeal joint
Flexor Pollicis Brevis
(Deep Head)
O: ulnar side of the 1st metacarpal
I: ulnar side – base of proximal phalanx
N: ulnar – deep branch
A: flexion of proximal phalanx at the metacarpophalangeal joint
Opponens Pollicis
O: tubercle of the trapezium, flexor retinaculum
I: length of the metacarpal bone of the thumb on its radial side
N: median – recurrent branch
A: opposition of the thumb – bringing the thumb out to face the fingertips
Adductor Pollicis
O: capitate bone and base of the 2nd and 3rd metacarpal (oblique head)
Palmar surface of the 3rd metacarpal (transverse head)
I: ulnar side of the base of the 1st phalanx of the thumb
N: ulnar – deep branch
A: adduction of the thumb
Palmaris Brevis
O: ulnar margin – palmar aponeurosis and flexor retinaculum
I: skin on the ulnar border of the palm of the hand
N: ulnar – superficial branch
A: draws skin on the ulnar side inward to “cup” the hand
Abductor Digiti Minimi
O: pisiform bone
I: ulnar side – base of the proximal phalanx of the 5th digit
N: ulnar – deep branch
A: abduct the little finger at the metacarpophalangeal
Flexor Digiti Minimi
O: hook of hamate, flexor retinaculum
I: ulnar side of the base of the proximal phalanx of the 5th digit
N: ulnar – deep branch
A: flexion of proximal phalanx of the 5th digit
Opponens Digiti Minimi
O: hook of hamate, flexor retinaculum
I: whole length of the metacarpal bone of the 5th digit on the ulnar side
N: ulnar – deep branch
A: opposition – bringing the tip of the 5th digit to the face of the tip of the thumb
Lumbricals
O: tendons of the flexor digitorum profundus
I: radial side – extensor expansion at the level of the proximal phalanx, distal to the
insertion of the interossei
N: median – superficial branch (II and III)
Ulnar – deep branch (IV and V)
A: flexion of proximal phalanges and extension of middle and distal phalanges
Dorsal Interossei
(4 in number, located between
metacarpals)
O: from adjacent sides of the metacarpal bones
I: extensor expansion and bases of proximal phalanges, radial side of 2nd and 3rd
digits, ulnar side of 3rd and 4th digits, proximal to lumbricals insertion
N: ulnar – deep branch
A: abduction and flexion of digits at metacarpophalangeal (MP) joints
Extension of proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints
Palmar Interossei
(3 in number)
O: length of metacarpal bones II, IV and V on palmar surfaces
I: extensor expansion and bases of proximal phalanges, radial side of 4th and 5th digits,
ulnar side of 2nd digit, proximal to lumbricals insertion
N: ulnar – deep branch
A: adduction and flexion at MP joints
Extension of PIP and DIP joints