Hand and Wrist Muscles Flashcards
Which is NOT part of the Thenar Eminence?
a. Flexor digiti minimi
b. Palmaris digiti minimi
c. Abductor digiti minimi
d. Opponens digiti minimi
b. Palmaris digit minimi (Doesn’t even exist)
Opponen pollicis
Oppose thumb Oppose 1st (thumb) metacarpal
Recurrent branch of median nerve
Abductor pollicis brevis
ABducts thumb
Aids in opposition of thumb
Recurrent branch of median
Flexor pollicis brevis
Flexes thumb
Reccurent branch of median (superficial head)
Deep branch of ulnar (Deep head)
Adductor pollicis
ADducts thumb toward lateral border of palm
Deep branch of ulnar
Abductor digiti minimi
ABducts 5th digit (pinky)
Aids in flexion of 5th proximal phalynx
Deep branch of ulnar
Flexor digiti minimi (brevis)
Flexes proximal phalynx of 5th digit
Deep branch of ulnar
Opponens digiti minimi
Brings 5th digit anterior
Rotates 5th digit to bring it into opposition with thumb
Deep branch of ulnar
What are the short intrinsic hand muscles
Lumbricals
Palmar interossei
Dorsal interossei
Lumbricals
Flex digits 2-5 at metacarophalangeal joints
Extend digits 2-5 at interphalangeal joints
1st and 2nd
Palmar interossei
ADduct 2nd, 4th, and 5th fingers toward axial line
Assist lumbricals in flexion and extension
Deep branch of ulnar
Dorsal interrosei
ABduct 2nd, 4th, and 5th fingers away from axial line
Assist lumbricals in flexion and extension
Deep branch of ulnar
PAD =
DAB =
Palmar interrossei ADducts
Dorsal interossei ABducts
Which is NOT part of the Thenar Eminence?
a. Abductor pollicis brevis
b. Flexor pollicis brevis
c. Opponens pollicis
d. Adductor pollicis
d. Adductor pollicis
