Muscles of the Hand Flashcards
what are the intrinsic muscles of the hand that are innervated by the ulnar nerve
palmaris brevis, dorsal and palmar interossei, adductor pollicis, hypothenar muscles, lumbricals (4-5)
what are the hypothenar muscles of the hand
opponens digiti minimi, abd digiti minimi, flex digiti minimi brevis
what intrisic hand muscles does the median nerve innervate
the thenar muscles, the 1st and 2nd lumbricals, and abductor pollicis brevis
what are the thenar muscles of the hand
flexor pollicis brev and the opponens pollicis
what is the origin of palmaris brevis
flexor retinaculum
what is the insertion of the palmaris brevis
dermis on the ulnar border
what is the action of palmaris brevis
wrinkle the skin of the palm
what is the origin of adductor pollicis
2nd and 3rd metacarpal
where does adductor pollicis insert
the proximal 1st phalange, the thumb!
what is the origin of the 1st and 2nd lumbricals
lateral tendons of flexor digitorum profundus
what is the origin of the 2nd and 3rd lumbricals
the medial tendons of flexor digitorum profundus
what is the innervation of the 1st and 2nd lumbrical
median nerve
what is the innervation of the 3rd and 4th lumbrical
ulnar nerve
what is the insertion of the dorsal interossei
the dorsal digital expansion of phalanges 2-4
which finger does not have a palmar interosseus muscles?
the 3rd finger (middle finger)
