Origin, Insertion, Action and Exercises of each Muscle Flashcards
(78 cards)
4 Muscles of the Rotator Cuff
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
Muscles of the Deltoid
Anterior - Red
Middle - Green
Posterior - Blue

Anterior Deltoid (All)
- Origin: Outer third of clavicle
- Insertion: Deltoid tuberosity of humerus
- Action: Flexion, horizontal adduction, medial rotation
Middle Deltoid (All)
- Origin: Top of acromion
- Insertion: Deltoid tuberosity of humerus
- Action: Abduction, horizontal abduction
Posterior Deltoid (All)
- Origin: Scapular spine
- Insertion: Deltoid tuberosity of humerus
- Action: Extension, horizontal abduction, lateral rotation
Muscles of the Pectoralis Major
Clavicular
Sternal

Clavicular Pectoralis Major (All)
- Origin: Medial two-thirds of clavicle
- Insertion: Lateral aspect of interbercular groove of the humerus
- Action: Flexion, horizonal adduction, medial rotation
Sternal Pectoralis Major (All)
- Origin: Anterior sternum and cartilage of the first six ribs
- Insertion: Lateral aspect of interbecular groove of the humerus
- Action: Extension, adduction, horizontal adduction, medial rotation

Primary Action of Supraspinatus
*Muscle of the rotator cuff
Assists abduction and assists with lateral rotation

Latissumus Dorsi (All)
- Origin: Lower 6 thoracic, all lower lumbar vertebrae, posterior sacrum, iliac crest and lower 3 ribs
- Insertion: Anterior aspect of interbecular groove
- Action: Extension, adduction, horizontal abduction and medial rotation

Primary Action of Teres Major
Assist in extention, adduction, medial rotation of the humerus

Primary Action of Infraspinatus
* Muscle of the rotator cuff
Lateral rotation and horizontal abduction

Primary Action of Teres Minor
* Muscle of the rotator cuff
Lateral rotation, horizontal abduction

Primary Action of Subscapularis
* Muscle of the rotator cuff
Medial rotation

Muscles of the Biceps Brachii
Long Head - Red
Short Head - Green

Long Head Bicep Brachii (All)
- Origin: Upper rim of glenoid fossa
- Insertion: Radial tuberosity
- Action: Assists with abduction
Short Head Bicep Brachii (All)
- Origin: Coracoid process of the scapula
- Insertion: Radial tuberosity
- Action: Assists with flexion, adduction, medial rotation, horizontal adduction
Primary Action of Brachioradialis
Flexion, pronation and supination

Primary Action of Brachialis
Flexion

2 heads of Pronator Teres
Humeral Head
Ulnar Head

Primary Action of Humeral Head (Pronator Teres)
Pronation, assist with flexion
Primary Action of Ulnar Head (Pronator Teres)
Pronation, assists with flexion
Primary Action of Supinator
Supination

Muscles of the Triceps Brachii
Long Head (Red)
Lateral Mead (Yellow)
Medial Head (Green)
























