Upper Extremities Flashcards
ABduction
crosses on lateral side of a joint
brings limb closer to body
ADduction
crosses on medial side of joint
limb further away from body
Deltoid(function)
ABduction of shoulder
Pectoralis Major (function)
ADduction of Shoulder
Rotator Cuff
Stabilizes shoulder
suprapinatous, subscapularis, infraspinatus, teres minor
Upper Arm Extensors (function, muscles, innervation)
Posterior
extends elbow and forearm
triceps brachii, extensor digitorum
innervated by radial nerve
Upper Arm Flexors (function, muscles, innervation)
Anterior
Flexes arm and supinates forearm
biceps brachii, flexor carpi radialis, brachialis
innervated by musculocutaneous nerve
Forearm Flexors (function, tendon origin, innervation)
Anterior
flex wrist and digits
tendon originates on medial epicondyle of the humerus
innervated by ulnar or median nerve
Forearm Flexors (Superficial)
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi unlaris
Forearm Flexors (Deep Muscles)
Flexor pollicis longus
pronator quadratus
flexor digitorum profundus
flexor digitorum superficialis
Forearm Extenders (function, tendon origin, innervation)
posterior
extend wrist and digits
tendon originates form the lateral epicondyle of the humerus
innervated by the radial nerve
Forearm extenders (Superficial)
extensor carpi ulnaris
extensor digitorum
extensor carpi radialis brevis
extensor carpi radialis longus
Forearm extenders (deep)
supinator
abductor pollicis longus
extensor pollicis brevis and longus
extensor indicus
Thenar muscles
ball of thumb:
- abductor pollicis brevis
- flexor pollicis brevis
- opponens pollicis
- adductor pollicis
Midpalmer muscles
lumbricals
palmer interossei
dorsal interossei
