Muscles of the Upper Extremity

Deltoid (Lateral Girdle Muscle)
Function: Glenohumeral Joint Abduction

Latissimus Dorsi (Posterior Girdle Muscle)
Function: Adduction of arm

Trapezius (Posterior Girdle Muscle)
Function: Elevation of shoulders superiorly (Shrug shoulders)

Rhomboid Major (Posterior Girdle Muscle)
Function: Retract scapula medially

What is in the light blue?

Rhomboid Minor (Posterior Girdle Muscle)
Function: Retract scapula medially

What is in the dark blue?

Levator Scapulae (Posterior Girdle Muscle)
Function: Elevation of scapula superiorly

Supraspinatus (Posterior Girdle Muscle)
Function: Abduction of arm

What is in the light blue?

Infraspinatus (Posterior Girdle Muscle)

Function: Posterior rotation of arm

What is in the dark blue?

Teres Major (Posterior Girdle Muscle)
Function: Adduction of arm

Teres Minor (Posterior Girdle Muscle)
Function: Adduction of arm

Pectoralis Major (Anterior Girdle Muscle)
Function: Flexion of arm

Pectoralis Minor (Anterior Girdle Muscle)
Function: Protracts scapula anteroinferiorly

Serratus Anterior (Anterior Girdle Muscle)
Function: Protracts scapula anteroinferiorly

Subscapularis (Anterior Girdle Muscle)

Function: Anterior rotation of arm

Biceps Brachii (Upper Arm Muscle)
Function: Flexion of arm at the elbow

Brachialis (Upper Arm Muscle)
Function: Flexion of arm at the elbow

Coracobrachialis (Upper Arm Muscle)
Function: Flexion of arm at the shoulder

Triceps Brachii (Upper Arm Muscle)
Function: Extension of arm at the elbow

Brachioradialis (Anterior Forearm Muscle)
Function: Flexion of arm at the elbow

What muscle is in the dark blue?

Flexor Carpi Radialis (Anterior Forearm Muscle)
Function: Flexion of hand at the wrist

What muscle is in light blue?

Palmaris Longus (Anterior Forearm Muscle)
Function: Flexion of hand at the wrist

What muscle is in the dark blue?

Flexor Carpi Ulnaris (Anterior Forearm Muscle)
Function: Flexion of hand at the wrist

What muscle is in the light blue?

Pronator Teres (Anterior Forearm Muscle)
Function: Pronation of hand

Flexor Digitorum Superficialis (Anterior Forearm Muscle)
Function: Flexion of proximal IP joints 2 - 5

Extensor Carpi Radialis Longus (Anterior Forearm Muscle)
Function: Extension of hand at the wrist

Extensor Carpi Radialis Brevis (Posterior Forearm Muscles)
Function: Extension of hand at the wrist

Extensor Digitorum (Posterior Forearm Muscles)

Function: Extension of hand

What Muscle is in the light blue?

Extensor Digiti Minimi (Posterior Forearm Muscles)

Function: Extension of digit 5

What muscle is in the dark blue?

Extensor Carpi Ulnaris (Posterior Forearm Muscles)
Function: Extension of hand at the wrist

Abductor Pollicis Longus (Posterior Forearm Muscles)
Function: Abduction of the pollux

Extensor Pollicis Brevis (Posterior Forearm Muscles)
Function: Extension of MP and IP joints 1