Wrist and Hand Flashcards
what are the movements of the thumb
flexion - close fingers
extension - other way
circumduction - circle finger
abduction - spreading
adduction - back together
opposition - little finger to thumb
what type of joint is the radiocarpal joint
condyloid, flexion and extension.
what type of joint are carpometacarpal joints
plane joints 2nd - 5th - minimal movements, 1st - saddle joints
what type of joints are metacarpopholangeal joint
condyloid joints - flexion, extension, abduction, adduction, circumduction
what type of joint is the proximal interphalangeal joint
hinge joint - flexion and extension
what type of joint is the distal interphalangeal joints
hinge joints - flexion and extension
name the action, origins, insertions and layer of the Flexor Pollicis Longus
origins: anterior radius
Insertions: distal phalanx thumb
action: flexes pollicis
Layer: deep
name the action, origins, insertions and layer of the Flexor digitorum profundus
origins: Ulna
Insertions: distal phalanxes of fingers
action: flexes fingers
Layer: deep
name the action, origins, insertions and layer of the Flexor digitorum superficialis
origins: medial epicondyle
Insertions: middle phalanges of fingers
action: flexes fingers - not at distal IP joint
Layer: Intermediate
name the action, origins, insertions and layer of the Flexor carpi radialis
origins: medial epicondyle
Insertions: palmar fascia
action: flexes wrist
Layer: superficial
name the action, origins, insertions and layer of the Palmares longus
origins: medial epicondyle
Insertions: palmar fascia
action: weak wrist flexor, anchor for skin and fascia of hand
Layer: superficial
name the action, origins, insertions and layer of the Flexor Carpi Ulnaris
origins: medial epicondyle
Insertions: metacarpal 5, also pisiform and hamate
action: ulnar deviation
Layer: superficial
name the action, origins, insertions and layer of the extensor carpi radialis longus.
origins: lateral epicondyle
Insertions: base metacarpal 2
action: wrist extension, radial deviation
Layer: superficial
name the action, origins, insertions and layer of the Extensor carpi radialis brevis
origins: lateral epicondyle
Insertions: base metacarpal 3
action: wrist deviation, radial deviation
Layer: superficial
name the action, origins, insertions and layer of the Extensor digitorum
origins: lateral epicondyle
Insertions: dorsal digital expansion
action: extends fingers
Layer: superficial
name the action, origins, insertions and layer of the extensor digiti minimi
origins: lateral epicondyle
Insertions: dorsal digital expansion
action: extends little finger
Layer: superficial
name the action, origins, insertions and layer of the extensor carpi ulnaris
origins: lateral epicondyle
Insertions: base of metacarpal 5
action: wrist extension, ulnar deviation
Layer: superficial
name the action, origins, insertions and layer of the Extensor Indicis
origins: distal 1/3 of Ulna
Insertions: dorsal digital expansion
action: extends index finger
Layer: deep
name the action, origins, insertions and layer of the extensor pollicis longus
origins: middle 1/3 of Ulna
Insertions: distal phalanx
action: extends thumb
Layer: deep
name the action, origins, insertions and layer of the extensor pollicis brevis
origins: distal 1/2 of radius
Insertions: proximal phalanx
action: extends thumb
Layer: deep
name the action, origins, insertions and layer of the Abductor Pollicis Longus
origins: proximal half of Ulna
Insertions: base metacarpal 1
action: abducts thumb, extends thumb
Layer: deep
what is the function of the thenar eminence base of thumb
flexion, adbduction, opposition
name some muscles in the thenar eminence
opponens pollicis, flexor pollicis brevis, abductor pollicis brevis
what is the function of the hypothenar eminence - base of pinky
flexion, abduction opposition
name some muscles in the hypothenar eminence
opponens digiti minimi, flexor digiti minimi, abductor digiti minimi.
