Origin, Insertion And Action Funct. Anatomy

Front 1

Deltoid

Back 1

Origin: clavicle spine of scapula
Insertion: deltoid tuberosity
Action: Abduct the shoulder

Front 2

Latissimus Dorsi

Back 2

Origin: Inferior angle of scapula, down spine
Insertion: Intertubercular groove of the humerus
Action: Extend the shoulder

Front 3

Teres Major

Back 3

Origin: Inferior angle
Insertion: Humerus near the top
Action: Extend the shoulder

Front 4

Teres Minor

Back 4

Origin: Upper Lateral Boder of scapula
Insertion: Humerus near the top
Action: Laterally rotate the shoulder

Front 5

Pectoralis Major

Back 5

Origin: Medial half of clavicle, sternum
Insertion: Crest of greater tubercle of humerus
Action: Adduct the shoulder

Front 6

Pectoralis Minor

Back 6

Origin: Third, fourth and fifth ribs
Insertion: coracoid process
Action: Depress the scapula

Front 7

Trapezius

Back 7

Origin: cervical,
Insertion: mid-back
Action: Extend the head and neck

Front 8

Supraspinatus

Back 8

Origin: Supraspinous fossa of the scapula
Insertion: Greater tubercle
Action: Abduct the shoulder

Front 9

Infraspinatus

Back 9

Origin: Infraspinous fossa of the scapula
Insertion: Greater tubercle
Action: Laterally rotate the shoulder

Front 10

Serratus Anterior

Back 10

Origin: External surfaces of upper eight or nine ribs
Insertion: Anterior surface of medial border of the scapula
Action: Abduct the scapula

Front 11

Corocobrachialis

Back 11

Origin: Coracoid process
Insertion: mid-humerus
Action: Flex shoulder

Front 12

Subscapularis

Back 12

Origin: Subscapular fossa of the scapula (under)
Insertion: Lesser Tubercle
Action: Medially rotate the shoulder

Front 13

Rhomboids

Back 13

Origin: upper spinous process C & T
Insertion: Medial border of scapula
Action: Adduct the scapula

Front 14

Levator Scapula

Back 14

Origin: cervical area, neck
Insertion: medial border
Action: Elevate scapula

Front 15

Subclavis

Back 15

Origin: First rib and cartilage
Insertion: Posterior clavicle
Action: Depress the clavicle