Action of Upper Limb Muscles Flashcards
Coracobrachialis Muscle
adducts and flexes humerus at the shoulder
Biceps Brachii
Supinates and flexes forearm, flexes arm
Brachialis
Flexes forearm at the elbow
Triceps Brachii
Extends forearm and arm at elbow, long head stabilizes head of humerus and extends and adducts arm at shoulder
Aconeus
Extends forearm
Pronator Teres
pronates forearm
Flexor Carpi Radialis
Flexes and abducts hand at wrist (radial deviation)
Palmaris Longus
Flexes hand at wrist and tenses palmar aponeurosis
Flexor Carpi Ulnaris
Flexes and adducts hand at wrist
Flexor digitorum superficialis
Flexes middle phalanx at proximal interphalangeal(PIP) joint of digits 2-5
Flexor digitorum profundus
Flexes distal phalanx at distal interphalangeal (DIP) joints of digits 2-5
Flexor pollicis (thumb) longus
Flexes digit 1
Pronator quadratus
pronates forearm
Brachioradialis
flexes forearm
Extensor carpi radialis longus
extend and abduct hand at wrist
Extensor carpi radialis brevis
Extend and abduct hand at wrist
Extensor digitorum
Extends digits 2-5 at metacarpophalangeal joint
Extensor digit minimi
Extends digit 5 at metacarpophalangeal joint
Extensor Carpi Ulnaris
Extends and adducts hand at wrist
Supinator
supinates forearm
Abductor pollicis longus
abducts thumb
Extensor pollicis brevis
extends proximal phalanx of thumb at metacarpophalangeal joint
Extensor pollicis longus
extends distal phalanx of thumb
Extensor indicis
extends digit 2
Abductor Pollicis Brevis
Abducts Thumb
Flexor Pollicis Brevis
Flexes thumb
Opponens Pollicis
Opposes thumb
Lumbricals
Flex MCP joints, extend IP joints of digits 2-5
Abductor Digiti Minimi
Abducts digit 5
Flexor Digiti Minimi Brevis
Flexes Proximal Phalanx of Digit 5
Opponens Digiti Minimi
Opposes 5th digit to thumb
Adductor Pollicis Muscle
Adducts thumb
Dorsal Interosseous Muscles (4)
Abducts digits 2-4
Palmar Interossei Muscles (3)
Adducts digits 2,4,5