Actions Flashcards
What is the action of Pectoralis minor
Depresses scapula
Causes inferior angle to move posteromedially
Rotate glenoid inferiorly
What is the action of coracobrachialis
Strong extensor
Flexion, aDduct, medially rotate
What is the action of Teres major
Medially rotates
Extends
ADduct
What is the action of deltoid
Anterior: flexion, medial rotation, aDduct
Middle: aBduction
Posterior: extension, lateral rotation, aDduct
What is the action of subclavius
Secure clavicle in sternoclavicular joint
What is the action of omohyoid
Depress the omohyoid bone
Depress hyoid and larynx for phonation and swallowing
What is the action of biceps brachii
Elbow joint: elbow flexion and supination
Shoulder joint: flexion, stabilization of the humerus during deltoid contractions, abduction. Medial rotation of the humerus
What is the action of brachialis
Flexion at the elbow joint
What is the action triceps brachii
Elbow joint: extension
Shoulder joint: extension and aDduction
What is the action of serratus anterior
Protraction of scapula
Lateral rotation
What is the action of supraspinatus
Initiates abduction, first 15 degrees of movement
What is the action of infraspinatus
Lateral rotation
What is the action of Teres minor
Lateral rotation
Weak aDduction
What is the action of subscapularis
Medial rotation
What is the action of Pectoralis major
Major flexor
ADduction
Medial rotation
What is the action of extensor carpi radialis longus
Elbow: weak flexion
Wrist: extension, aBduction
What is the action of extensor carpi radialis brevis
Elbow: weak flexion
Wrist: extension, aBduction
What is the action of extensor digitorum
Wrist: extension
Extension and aBduction of digits
What is the action of extensor digiti minimi
Wrist: extension and ulnar aBduction of the hand
Extension and aBduction of the 5th digit
What is the action of extensor carpi ulnaris
Wrist: extension and aDduction of hand (ulnar deviation)
What is the action of supinator
Supination
What is the action of abductor pollicis longus
Radiocarpal joint: abduction of hand
Carpometacarpal joint of thumb: abduction of thumb
What is the action of extensor pollicis brevis
Radiocarpal joint: abduction, radial deviation
Carpometacarpal joint of thumb: extension
What is the action of extensor pollicis longus
Wrist/Radiocarpal joint: extension, abduction (radial deviation)
Carpometacarpal joint of the thumb: aDduction, extension
What is the action of extensor indicis
Wrist: extension
2nd digit: extension
