Muscles of the Upper Limb

1. Muscles of the Shoulder (Scapulohumeral Group)

1. Deltoid
2. Supraspinatus
3. Infraspinatus
4. Teres Minor
5. Teres Major
6. Subscapularis

2. Muscles of the Arm (Anterior Compartment)

1. Biceps Brachii
2. Brachialis
3. Coracobrachialis

Arm (Posterior Compartment)

1. Triceps Brachii
2. Anconeus

3. Muscles of the Forearm

Anterior Compartment - Superficial Layer

1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
4. Flexor Carpi Ulnaris
5. Flexor Digitorum Superficialis

Anterior Compartment - Deep Layer

1. Flexor Digitorum Profundus
2. Flexor Pollicis Longus
3. Pronator Quadratus

Posterior Compartment - Superficial Layer

1. Brachioradialis
2. Extensor Carpi Radialis Longus
3. Extensor Carpi Radialis Brevis
4. Extensor Digitorum
5. Extensor Digiti Minimi
6. Extensor Carpi Ulnaris

Posterior Compartment - Deep Layer

1. Supinator
2. Abductor Pollicis Longus
3. Extensor Pollicis Brevis
4. Extensor Pollicis Longus
5. Extensor Indicis

4. Muscles of the Hand

Thenar Muscles (Thumb)

1. Abductor Pollicis Brevis
2. Flexor Pollicis Brevis
3. Opponens Pollicis
4. Adductor Pollicis

Hypothenar Muscles (Little Finger)

1. Abductor Digiti Minimi
2. Flexor Digiti Minimi Brevis
3. Opponens Digiti Minimi

Intermediate/Central Muscles

1. Palmaris Brevis
2. Lumbricals (1st, 2nd, 3rd, 4th) - 4 muscles
3. Dorsal Interossei (1st-4th) - 4 muscles
4. Palmar Interossei (1st-3rd) - 3 muscles

5. Muscles Connecting Upper Limb to Thorax / Vertebral Column (Extrinsic Shoulder Muscles)

Anterior Group

1. Pectoralis Major
2. Pectoralis Minor
3. Serratus Anterior
4. Subclavius

Posterior Group

1. Trapezius
2. Latissimus Dorsi
3. Levator Scapulae
4. Rhomboid Major
5. Rhomboid Minor