Human Chest and Arm Muscles

Pectoralis Major Pectoralis Minor

Rotator Cuff Muscles Supraspinatus Infraspinatus Teres minor Subscapularis Another shoulder muscle, but not part of the Rotator Cuff: Teres Major

ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous (Teres major) Teres minor ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous (Biceps brachii)

ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous

Rotator Cuff Injury Symptoms Pain and tenderness in your shoulder, especially when reaching overhead, reaching behind your back, lifting, pulling or sleeping on the affected side. Diagnosis X-rays MRI Ultrasound

Causes of Rotator Cuff Injuries Normal wear and tear. Poor posture. When you slouch your neck and shoulders forward, the space where the rotator cuff muscles reside can become smaller. This can allow a muscle or tendon to become pinched under your shoulder bones (including your collarbone), especially during overhead activities, such as throwing. Falling. Using your arm to break a fall or falling on your arm Lifting or pulling. Lifting an object overhead Likewise, pulling something, such as a high-poundage archery bow, may cause an injury. Repetitive overhead movement. This occurs often in athletes, especially baseball pitchers, swimmers and tennis players. It's also common among people in the building trades, such as painters and carpenters.

Deltoid

Deltoid Biceps brachii

Deltoid Coracobrachialis Triceps brachii Biceps brachii

Deltoid Coracobrachialis Biceps brachii Brachialis (deep to biceps brachii)

Deltoid Biceps brachii Triceps brachii

Pronator teres Brachioradialis

Extensor digitorum Extensor carpi radialis Extensor carpi ulnaris

Ext carpi radialis Ext digitorum Extensor carpi ulnaris

Flexor retinaculum Palmaris longus Flexor carpi ulnaris Flexor carpi radialis

Flexor carpi ulnaris Palmaris longus Flexor carpi radialis

Extensor pollicis longus Extensor pollicis brevis Abductor pollicis longus

Pronator teres Ext pollicis longus Ext pollicis brevis Abd pollicis longus Brachioradialis