Shoulders & Upper Chest
- Contralateral rotation
- Ipsilateral flexion
Serratus Anterior
- Protraction of the scapula
- Upward rotation of the scapula
- Stabilizes the scapula
Brachioradialis
Elbow flexion
Tricep
Extends the elbow
Biceps Brachii
- Supinates the wrist
External Oblique
- Bilateral lumbar flexion
- Ipsilateral side bend
- Contralateral rotation
Pronator Teres
Pronates the wrist
Extensor Digitorum
- Extends the wrist
- Extends the fingers
Pectoralis Major
- Adduction of the humerus
- Internal rotation of the humerus
Internal Oblique
- Bilateral lumbar flexion
- Ipsilateral side bend
- Ipsilateral rotation
Flexor Carpi Radialis
- Wrist flexion
- Radial deviation
Extensor Carpi Radialis Brevis & Longus
- Wrist extension
- Radial deviation
Pectoralis Minor
- Stabilizes the scapula
- Assists with inspiration
Rectus Abdominus
- Flexes the lumbar spine
- Stabilizes the pelvis
Palmaris Longus
Wrist flexion
Extensor Pollicis Brevis
Extends the thumb
Deltoid
Transverse Abdominus
- Compresses the abdomen
- Stabilizes the spine
- Increase infra-abdominal pressure (cough, sneeze, bowel movement)
Flexor Carpi Ulnaris
- Wrist flexion
- Ulnar deviation
Retinaculum
- Stabilize tendons,
- Ensure efficient force transmission
- Protect underlying nerves