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17 Cards in this Set
- Front
- Back
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Flexor Digitorum Superficialis
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flexes wrist
flexes fingers (especially second phalanx) Origin medial epicondyle of humerus proximal anterior surface of ulna and radius Insertion four tendons split into two slips and attached into second phalanx of fingers (minus thumb) |
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Flexor Digitorum Profundus
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flexes wrist
flexes fingers flexes distal interphalangeal joints of index, middle, ring, and little fingers Origin proximal three fourths of anteromedial aspect of ulna coronoid process and interosseous membrane Insertion base of distal phalanges of fingers |
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Flexor Pollicis Longus
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flexes interphalangeal joint of thumb
Origin medial epicondyle of humerus middle of anterior shaft of radius interosseous membrane Insertion distal phalanx of thumb |
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Extensor Digitorum
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extends fingers
extends metacapophalangeal joints extends interphalangeal joins of second through fifth digits Origin lateral epicondyle of humerus Insertion dorsal surface of phalanges of all fingers |
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Abductor Pollicis Longus
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abducts and extends the carpometacarpal joint of the thumb
abducts wrist Origin proximal, posterior surface of ulna and radius Insertion lateral margin of first metacarpal |
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Extensor Digiti Minimi
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extends metacarpophalangeal joint
etends interphalngeal joints of little finger Origin common extensor origin on the lateral epicondyle of the humerus Insertion dorsal surface of proximal phalanx of fifth digit |
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Dorsal Inerossei
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abducts second to fourth fingers from the axial line through the third digit
Origin adjacent sides of metacarpal bones Insertion all insert into the dorsal digital expansions of the index, middle, or ring fingers |
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Palmar Interossei
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adducts thumb, ring, and little finger toward the axial line through the third digit
Origin side of shaft of all metacarpal bones except middle metacarpal Insertion all insert into the dorsal digital expansions at the sides of bases of proximal phalanges of all digits (except middle) |
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Lumbricalis
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extends the interphalangeal joints and simultaneously flexes the metacarpophalangeal joins of the second through fifth digits
extends interphalangeal joints when the metacarpophalangeal joints are extended Origin tends of flexor digitorum profundus of each finger Insertion radial aspects of the dorsal expansion of the corresponding index, middle, ring, and little fingers |
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Abductor Digiti Minimi
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abducts metacarpophalangeal joint of little finger
Origin pisiform bone tendon of flexor carpi unlaris Insertion ulnar aspect of the base of the proximal phalanx of the little finger dorsal digital expansion of the little finger |
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Opponens Digiti Minimi
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opposes little finger with thumb
helps cup palm of hand Origin hook of hamate flexor retinaculum Insertion ulnar and adjacent palmar surface of the fifth metacarpal bone |
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Flexor Digiti Minimi
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flexes metacarpophalangeal joint of little finger
Origin hook of hamate flexor retinaculum Insertion ulnar aspect of base of proximal phalanx of little finger |
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Flexor Pollicis Brevis
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flexes the metacarpophalangeal and carpometacarpal joints of the thumb
Origin superficial head: flexor retinaculum and tubercle of trapezium bone deep head: capitate and trapezoid bones and palmar ligaments of distal row of carpal bones Insertion radial side of base of proximal phalanx of thumb |
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Extensor Pollicis Brevis
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extends metacarpophalangeal joint of thumb
extends and abducts carpometacarpal joint Origin posterior aspect of the radius below abductor pollicis longus posterior surface of interosseous membrane Insertion dorsal aspect of the base of the proximal phalanx of thumb |
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Abductor Pollicis Brevis
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abducts carpometacarpa and metacarpophalangeal joints of thumb in ventral direction perpendicular to plane of palm.
extends interphalangeal joint of thumb Origin flexor retinaculum tubercles of scaphoid and trapezium bones tendon of abductor pollicis longus Insertion radial aspect of base of proximal phalanx of thumb dorsal digital expansion of thumb |
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Adductor Pollicis
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adducts carpometacarpal joint and adducts metacarpophalangeal joint
Origin oblique head: capitate bone and palmar surfaces of bases of second and third metacarpal bones transverse head: distal two thirds of palmar surface of shaft of third metacarpal bone Insertion ulnar aspect of base of proximal phalanx of thumb dorsal digital expansion of thumb |
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Opponens Pollicis
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opposes carpometacarpal joint of thumb
Originflexor retinaculumtubercle of trapezium bone Insertionlateral surface and aspect of the palmar surface of the first metacarpal bone |
