Elbow
Brachialis
O: Anterior surface of the Humerus
I: Ulnar Tuberosity and Coronoid Process
A: Elbow Flexion
I: Musculocutaneous
Anconeous
O: Lateral Epicondyle
I: Lateral/Inferior to Triceps on Olecraonon Process
A: Elbow Extension
I: Radial
Pectoralis Major Clavicular
O: Medial Third of the Clavicle
I: Intertubercular Groove
A: Shoulder Flexion, Medial Rotation, Adduction
I: Lateral and Medial Pectoral Nerve
Infraspinatus
O: Infraspiantus Fossa
I: Greater Tubercle of Humerus
A: Shoulder External Rotation, Horizontal Abduction
I: Suprascapular
Levator Scapulae
O: Transverse Process C1-C4
I: Vertebral Border of the Scapula
A: Scapular Elevation, Downward Rotation
I: Dorsal Scapula
Brachioradialis
O: Lateral Supracondylar Ridge
I: Distal/Lateral Portion of the Radius
A: Elbow Flexion, Forearm Sup/Pro
I: Radial
Supinator
O: Lateral Epicondyle of Humerus
I: Anterior Surface of the Proximal Radius
A: Forearm Supination, Elbow Flexion
I: Radial
Pectoralis Minor
O: Ribs 3-5
I: Coracoid Process of the Scapula
A: Scapular Depression, Protraction, Downward rotation
I: Medial Pectoral Nerve
Subscapularis
O: Subscapular Fossa
I: Lesser Tubercle
A: Shoulder Adduction, Medial Rotation
I: Subscapular Nerve
Pectoralis Major Sternal
O: Sternum
I: Intertubercular Groove
A: Medial Rotation, Adduction
I: Lateral/Medial Pectoral Nerve
Coracobrachialis
O: Coracoid Process
I: Medial Aspect of the Humerus
A: Shoulder Flexion, Adduction
I: Musculocutaneous
Pronator Teres
O: Medial Epicondyle
I: Lateral aspect of Mid-Radius
A: Forearm Pronation, Elbow Flexion
I: Median
Serratus Anterior
O: Ribs 1-8
I: Vertebral Border of the Scapula
A: Scapular Retraction
I: Long Thoracic
Rhomboid
O: Spinous Process C7-T5
I: Vertebral Border of the Scapula
A: Scapular Retraction, Elevation, Downward Rotation
I: Dorsal Scapular
Latisimuss Dorsi
O: Spinous Process T7-L5
I: Intertubercular Groove
A: Shoulder Extension, Adduction, Medial Rotation
I: Thoracodorsal
Biceps Brachii Short Head
O: Coracoid Process
I: Radial Tuberosity
A: Shoulder Flexion, Elbow Flexion, Forearm Supination
I: Musculocutaneous
Pronator Quadratus
O: Anterior Distal 1/4th of Ulna
I: Anterior Distal 1/4th of Radius
A: Forearm Pronation
I: Median
Supraspinatus
O: Supraspinatus Foss
I: Greater Tubercle of the Humerus
A: Shoulder Abduction
I: Suprascapular
Teres:
Major
Minor
1. Major
O: Inferior Axillary Border
I: Intertubercular Groove
A: Shoulder Extension, Adduction, Medial Rotation
I: Lower Subscapular Nerve
2. Minor
O: Axillary Border
I: Greater Tubercle
A: External Rotation, Horizontal Abduction
I: Axillar
Shoulder Ligaments?
Coracoacromial
Coracoclavicular
Glenohumeral
Coracohumeral
Biceps Brachii Long Head
O: Supraglenoid Tubercle
I: Radial Tuberosity
A: Shoulder/Elbow Flexion
I: Musculocutaneous
Triceps Brachii (Same Insertion and Nerve)
Lateral Head
Medial Head
Long Head
Long:
O: Infraglenoid Tubercle of the Scapula
I: Olecranon Process of Ulna
A: Shoulder Extension
I: Radial
Lateral:
O: Inferior to Greater Tubercle
A: Shoulder/Elbow Extension
Medial Head
O: Posterior Surface of Humerus
A: Shoulder/Elbow Extension
Deltoid Origin and Actions
Anterior
Middle
Posterior
1. Anterior
O: Lateral 1/3 of Clavicle
A: Shoulder Abduction, Flexion, Medial Rotation, Horizontal Adduction
2. Middle
O: Acromion process
A: Shoulder Abduction
3. Posterior
O:Spine of scapula
A: Shoulder abduction, extension, lateral rotation, horizontal abduction
Trapezius:
Upper
Middle
Lower
Upper:
O: Occipital Bone
I: Lateral 1/3 of the Clavicle
A: Scapular Elevation, Upward Rotation, Retraction
I: Accessory Nerve
Middle:
O: Spinous Process C7-73
I: Medial Aspect of Acromion and Spine of Scapula
A: Scapular Retraction, Upward Rotation
I: Accessory
Lower:
O: Spinous Process T4-T12
I: Spine of Scapula
A: Scapular Depression, Upward Rotation, Retraction
I: Accessory