Upper Body- Muscle Actions Flashcards
What is the action of abductor digiti minimi (hand)
abducts the 5th digit
What is the action of trapezius
elevates and depresses the scapula (depending on which part of the muscle contracts); rotates the scapula superiorly; retracts scapula
What is the action of palmaris brevis
draws the skin of the ulnar side of the hand toward the center of the palm
What is the action of pronator quadratus
pronates the forearm
What is the action of extensor indicis
extends the index finger at the metacarpophalangeal, proximal interphalangeal and distal interphalangeal joints
What is the action of abductor pollicis brevis
abducts thumb
What is the action of brachioradialis
flexes the elbow, assists in pronation & supination
What is the action of serratus anterior
it draws the scapula forward; the inferior fibers rotate the scapula superiorly
What is the action of extensor digitorum
extends the metacarpophalangeal, proximal interphalangeal and distal interphalangeal joints of the 2nd-5th digits; extends wrist
What is the action of extensor digiti minimi
extends the metacarpophalangeal, proximal interphalangeal and distal interphalangeal joints of the 5th digit
What is the action of extensor pollicis longus
extends the thumb at the interphalangeal joint
What is the action of supraspinatus
abducts the arm
What is the action of opponens digiti minimi
opposes the 5th digit
What is the action of deltoid
abducts arm; anterior fibers flex & medially rotate the arm; posterior fibers extend & laterally rotate the arm
What is the action of pectoralis minor
draws the scapula forward, medialward, and downward
What is the action of infraspinatus
laterally rotates the arm
What is the action of flexor pollicis brevis
flexes the carpometacarpal and metacarpophalangeal joints of the thumb
What is the action of brachialis
flexes the forearm
What is the action of flexor pollicis longus
flexes the metacarpophalangeal and interphalangeal joints of the thumb
What is the action of pectoralis major
flexes and adducts the arm, medially rotates the arm
What is the action of rhomboideus major
retracts, elevates and rotates the scapula inferiorly
What is the action of supinator
supinates the forearm
What is the action of flexor digitorum profundus
flexes the metacarpophalangeal, proximal interphalangeal and distal interphalangeal joints
What is the action of extensor carpi radialis longus
extends the wrist; abducts the hand
What is the action of flexor carpi ulnaris
flexes wrist, adducts hand
What is the action of subscapularis
medially rotates the arm; assists extention of the arm
What is the action of rhomboideus minor
retracts, elevates and rotates the scapula inferiorly
What is the action of flexor digitorum superficialis
flexes the metacarpophalangeal and proximal interphalangeal joints
What is the action of teres minor
laterally rotates the arm
What is the action of palmaris longus
flexes the wrist
What is the action of teres major
adducts the arm, medially rotates the arm, assists in arm extension
What is the action of abductor pollicis longus
abducts thumb at carpometacarpal joint
What is the action of triceps brachii
extends the forearm; the long head extends and adducts arm
What is the action of flexor carpi radialis
flexes the wrist, abducts the hand
What is the action of pronator teres
pronates the forearm
What is the action of biceps brachii
flexes the forearm, flexes arm (long head), supinates
What is the action of coracobrachialis
flexes and adducts the arm
What is the action of levator scapulae
elevates the scapula
What is the action of extensor carpi radialis brevis
extends the wrist; abducts the hand
What is the action of extensor carpi ulnaris
extends the wrist; abducts the hand
What is the action of anconeus
extends the forearm
What is the action of subclavius
draws the clavicle (and hence the shoulder) down and forward
What is the action of adductor pollicis
adducts the thumb
What is the action of opponens pollicis
opposes the thumb
What is the action of extensor pollicis brevis
extends the thumb at the metacarpophalangeal joint
What is the action of latissimus dorsi
extends the arm and rotates the arm medially
What is the action of flexor digiti minimi brevis (hand)
flexes the carpometacarpal and metacarpophalangeal joints of the 5th digit