Actions Flashcards
Upper Trap
Elevation of scapula and shoulder, capital extension, cervical extension, rotation of head to opposite side. Rotation of scapula up
Middle trap
Scapular adduction
Lower Trap
Scapular adduction, depression and upward rotation
Latissimus Dorsi
Extends, adducts, and medially rotates, elevation of trunk towards arm
Levator scapulae
Elevates and adducts scapula, rotates scapula downward, lateral bending of cervical spine to same side
Rhomboid major and minor
Scapular adduction, downward rotation, and scapular elevation
Pec major Whole muscle
Adducts and medially rotates humerus, elevation of the sternum in forced inspiration
Pec Major clavicular head
horizontal shoulder adduction, flexion and medial rotation
Pec Major sternocostal head
horizontal shoulder adduction and shoulder extension
Pec Minor
Scapular protraction, elevation of ribs in forced inspiration with scapula fixed
Subclavius
Depresses and moves clavicle forward
Serratus anterior
Scapular abduction, holds scapula against thoracic wall, works with trap to rotate scapula upward to allow full shoulder abduction
Deltoid
Anterior: flexes, medially rotates, horizontal adduction
Middle: abducts arm
Posterior: extends, laterally rotates, horizontal abduction
Supraspinatus
Maintains head in glenoid fossa and abudcts shoulder
Infraspinatus
Laterally rotates arm, maintains head in glenoid fossa
Teres minor
Laterally rotates arm, maintains head in glenoid fossa
Teres major
Adducts and medially rotates arm, shoulder extension from flexed position
Subscapularis
Medially rotates arm, maintains head in glenoid fossa
Biceps brachii
supinates forearm when it is supine, flexes forearm, assists with shoulder flexion
Brachialis
Flexes forearm in all position
Coracobrachialis
Flexion and adduction of arm
Triceps brachii
Extension of elbow, long head assists in shoulder extension and adduction
Anconeus
Assists triceps with elbow extension
Pronator teres
Pronation of forearm, assists with elbow flexion
Flexor carpi radialis
Flexion and radial devation of wrist, also assists with elbow flexion and forearm pronation
Palmaris Longus
Tenses palmar aponeurosis, assists with wrist flexion
Flexor carpi ulnaris
Flexion and ulnar devation of wrist, assists elbow flexion
Flexor digitorum superficialis
Flexion of PIP joints of digits 2-5, assits with flexion of MCP joints of digits 2-5 and wrist flexion
Flexor digitorum profundus
Flexion of DIP joints and assists with flexion of MCP and PIP joints of digits 2-5 and wrist flexion
Flexor pollicis longus
Flexion of IP joint of thumb, assits with flexion of MCP and CMC joints of thumb, also wrist flexion
Pronator quadratus
Pronation of forearm
Opponens pollicis
Opposition of thumb (flexion, abudction, and medial rotation at CMC)
Abductor pollicis brevis
Abduction at CMC and MCP joints of thumb
Assits thumb opposition and IP extension
Flexor pollicis brevis
Flexion of MP and CMC joints of thumb
Adductor pollicis
Adduction of CMC joints of thumb. Assists thumb MCP adduction and flexion
Abductor digiti minimi
Abduction of 5th digit, assists opposition of 5th digit, may assist MCP flexion and IP extension of 5th digit
Flexor digiti minimi brevis
MCP flexion of 5th digit, assists opposition of 5th digit
Opponens digiti minimi
Oppostion of little finger to thumb (abduction, flexion, and lateral rotation)
Lumbricales
Flex MCP and simultaneously extend PIP and DIP
Dorsal interossei
Abduction of fingers
Palmar interossei
Adduction of fingers
Brachioradialis
Elbow flexion (strongest in midprone)
Extensor carpi radialis longus
Extend and radially deviate wrist, assists elbow flexion
Extensor carpi radialis brevis
Extend wrist and assist with radial deviation
Extensor digitorum
Extends MCP, PIP, and DIP joints of digits 2-5, assits wrist extension. IP extension in conjunction with hand intrinsics
Extensor digiti minimi
Extension of 5th digit at MCP, PIP, and DIP joints, assists wrist extension and abduction of 5th digit
Extensor carpi ulnaris
Extend and ulnar deviation of wrist
Supinator
Supination of forearm
Extensor indicis
Extensin of second finger at MCP, IP in conjunction with intrinsics, assists with wrist extension
Abductor pollicis longus
Extension and abduction of thumb at CMC joint, radial deviation, assists wrist flexion
Extensor pollicis longus
Extension of thumb at IP joint, assists with CMC and MP extension, assists with radial deviation
Extensor pollicis brevis
Extends MCP joint of thumb and extension and abudction of CMC joint of the thumb, assists with radial deviation and wrist extension
