intrinsic hand muscles Flashcards
THENAR
abductor pollicis brevis
flexor pollicis brevis
opponens pollicis
abductor pollicis brevis
THENAR
flexor retinaculum & scaphoid & trapezium > lat. side of proximal phalanx thumb
MEDIAN NERVE C8-T1
Abducts thumb
flexor pollicis brevis
THENAR
flexor retinaculum & trapezium > proximal phalanx thumb
MEDIAN NERVE C8-T1
flexes thumb
opponens pollicis
THENAR
flexor retinaculum & trapezium > lat. 1st MC
MEDIAN NERVE C8-T1
opposition of thumb
HYPOTHENAR
abductor digiti minimi
flexor digiti minimi
opponens digiti minimi
abductor digiti minimi
HYPOTHENAR
pisiform, tendon of FCU > 5th phalanx
Ulnar N, C8,T1
abducts 5th finger
flexor digiti minimi
HYPOTHENAR
hamate, flx reticulum > prox. phalanx of 5th finger
Ulnar N, C8,T1
flexes 5th finger
opponens digiti minimi
HYPOTHENAR
hamate, flx reticulum > 5th MCP
Ulnar N, C8,T1
opposition of 5th finger
PALMAR
palmaris brevis adductor pollicis ( 2 heads) palmar interossei dorsal interossei lumbricales
palmaris brevis
PALMAR
palmar aponeurosis flx retinaculum > dermis
Ulnar N C8,T1
improves grip
adductor pollicis
PALMAR O: 3rd MC and capitate T: base of 2nd and 3rd MC > base 1st prox. phalanx and ext. hood Ulnar N C8,T1 adducts thumb
Palmar interossei
PALMAR - 3 PAD
metacarpal > extensor expansion
Ulnar N C8,T1
add. fingers 2-5, flx 2-5 MP, ext. of PIP and DIP
Dorsal interossei
PALMAR - 4 DAB
adjacent metacarpal > extensor expansion
Ulnar N C8,T1
abd. fingers 2-5, flx 2-5 MP, ext. of PIP and DIP
lumbricales
PALMAR
tendons > radial side of extensor expansion
Ulnar N C8,T1
flx 2-5 MP, ext. of 2-5 PIP and DIP