Hand muscles Flashcards
Abductor Pollicis brevis- O,I,IN,A
O- flexor retinaculum, scafoid and trapezium
I- Prox phalanx of thumb (rad side)
In- recurrent branch of med c8,t1
A- abducts thumb
Flexor pollicis brevis- O, I, IN (super +deep), A
O- flexor retinaculum, scafoid and trapezium
I- Prox phalanx (rad side)
IN- super- Reccurent med c8,t1
Deep- deep ulnar n c8,t1
A- flexes thumb
Oppones Pollici- O, I, In, A
O- flexor retinaculum, scafoid and trapezium
I- 1st metacarpal lat side
IN- recurrent med c8,t1
A-opposition of thumb
Adductor Pollicis- O (oblique + transverse), I, IN, A
O- Obli- capitate, 2nd/3rd metacarpals
trans- 3rd metacarpal shaft lower 2/3
I- prox phalanx, med side
IN- deep ulnar c8,t1
A- adducts thumb
Lumbercles 1 and 2 unipenates- O, I, IN, A
O- lat 2 tendons of flex dig profundus
I- lat side of dorsal extensors of 2nd, 3rd dig
In- Median n C8,T1
A- flex metacapopharengeal, extend interpharangeal
Lumbricles 3 and 4 bipennates- O, I, IN, A
O- medial 2 tendons of flex digitorum profundus
I- Lat side of dorsal extensors of 4, 5 dig
In- deep ulnar C8,t1
A- flex metacarpopharengeal, extend interpharengeal
Palmer interossi 1,2,3- O, I, In, A
O- 2,4,5 metacarpal bones
I- bases of prox phalanges (toward midline) of 2,4,5 metacarpals
In- deep ulnar c8,t1
A- adduct 2,4,5 fingers toward midline, flex metacarpophaengeal, extend interpharengeal
dorsal interossi 1,2,3,4- O, I, IN, A
O- adjacent sides of 2 metacarpal bones
I- bases of prox phalanges and extensor expansions of 2,3,4 dig
In- deep ulnar c8,t1
A- abduct 2,3,4 fingers, flex metacarpopharengeal, extend interpharengeal
Palmaris brevis- O, I, IN, A
O- flexor retinaculum
I- skin of ulnar border of palm
In- superficial ulnar c8,t1
A- wrinkles skin
Abductor digiti minimi- O, I, IN, A
O- pisiform, pisohamate lig
I- prox phalanx, 5th dig med
IN- deep ulnar c8,t1
A- abducts 5th
Flexor digiti minimi- O, I, IN, A
O- flexor retinaculum, hook of hamate
I- prox phalanx 5th dig med
In- deep ulnar c8,t1
A- flexes 5th digit
Opponess digiti minimi- O, I, In, A
O- flexor retinaculum, hook of hamate
I- 5th metacarpal bone med
In- deep ulnar c8,t1
A- opposition
