UE Muscle Actions

Scapula

100

Upper, Middle, Lower Trapezius 

Upper--> Elevates and upward rotation of scapula

Middle--> Scapular adduction

Lower--> Scapular depression

200

Levator Scapulae

Elevates, adduction, downward rotation of scapula

300

Serratus Anterior

Abduction and upward rotation of scapula

400

Rhomboid Major

Adduction, downward rotation, elevation of scapula

500

Rhomboid Minor

Adduction and elevations of scapula

Shoulder

100

Anterior, Posterior, and Middle Deltoid

Anterior--> Flexions of shoulder

Posterior--> Extension of shoulder

Middle Abduction of shoulder

200

Coracobrachialis

Flexion and adduction of shoulder

300

Teres Major 

What muscle has the same muscle actions as the teres major?

Adduction, extension, medial rotation of shoulder

Latissimus Dorsi

400

Supraspinatus

What other muscles do the same type of rotation as this one?

Abduction and lateral rotation of shoulder

Infraspinatus and Teres minor

500

Pectoralis Major

Adduction and medial rotation of shoulder

Clavicular Portion--> Flexion and horizontal adduction of shoulder

Sternocostal Portion--> Extension of shoulder from flexed position

Arm

100

Biceps Brachii

Flexion of elbow

Supination of Forearm

Assists in flexion of shoulder

200

Brachialis 

Flexion of elbow

300

Triceps Brachii

Extension of elbow 

Long head assists in extending shoulder

400

Anconeus

Assists in extending elbow

500

Brachioradialis 

Flexion of elbow

Forearm

100

Pronator Teres

Pronation of forearm 

Assists in flexion of elbow

200

Flexor digitorum superficialis

Flexion of PIP joints of 2-5 digits

Assists in flexion of MCP joints 2-5 digits and the wrist 

300

Abductor pollicis longus

Abduction and extension of CMC joint of thumb 

Assists in abduction/ radial deviation and flexion of wrist

400

Extensor Indicis

Extension of digit 2/ index finger

Assists in wrist extension

500

Extensor pollicis brevis

Extension of MCP and CMC joint of thumb

Hand

100

Lumbricals

Flexion of MCP joints 2-5

Extension of PIP and DIP joints 2-5

200

Palmar Interossei

Abduction and Flexion of digits 2,4,5 MCP joints

Extension of PIP and DIP joints 2,4,5,

300

Dorsal Interossei

Abduction and flexion of digits 2,3,4 MCP joints 

Extension of PIP and DIP joints of digits 2,3,4

400

Opponens Pollicis 

Opposition at CMC joint of thumb

500

Abductor Pollicis brevis

Abduction of CMC and MCP joints of the thumb