Final: Hand Anatomy Flashcards
Muscles of thenar emminence
Abductor pollicus brevis
Opponens pollicis
Flexor pollis brevis
Muscles of hypothenar emminence
Flexor digiti mini
Abductor digiti minimi
Oppons digit minimi
Adb Pollicus brevis
O: scaphoid, trapezium
I: prox. phalanx of thumb
N: median
A: abducts thumb
Opponens Pollicis
O: trapezium
I: 1st mc
N: median
A: medially rotates thumb into opposition
Flexor pollicus brevis
O: trapezium
I: prox. 1st phalanx
N: median
A: flexs thumb on mcpj
Add Pollicis
O: 2 & 3rd mc, capitate
I: prox. phalanx of thumb
N: ulnar
A: Adduct thumb
Which is the strongest muscle in the hand?
Add. Pollicis
Flexor Digiti Minimi
O: hook of hammate
I: prox. phalanx
N: ulnar
A: flexion D5 at mcpj
Abd. Digiti Minimi
O: pisiform tendon of fcu
I: proximal phalanx of D5
N: ulnar
A: abduct pinkie
Opponens Digiti Minimi
O: hook of hamate
I: 5th mc
N: ulnar
A: rotates 5th mc in opposition
Lumbricals
O: tendons of fdp
I: dorsal hood of D2-D5
N: median: D2-D3, ulnar: D4-D5
A: flexs one joint and extends 2 joints
Dorsal Interossei
O: Adjacent side of mc
I: base of prox. phalanyx D2-D4
N: ulnar
A: abduction D2, D3, D4
Palmar Interossei
O: D2, D4, D5
I: base of side of mc and extensor hoods D2-D4
N: ulnar
A: adductors fingers
