Block 1 - Origins of the shoulder & chest muscles

Pectoralis Major

Clavicular head- on medial ½ of anterior side of clavicle

Sternocostal head- anterior surface of sternum & superior 6 costal cartilages

Pectoralis Minor

3rd, 4th, and 5th ribs

Serratus anterior

External surface of lateral parts of ribs 1-8

UPPER Trapezius (descending)

External Occipital Protuberance & Nuchal Line & ligament

MIDDLE Trapezius (transverse)

Ligamentum Nuchae

LOWER Trapezius (ascending)

All 12 thoracic vertebrae

Latissimus Dorsi

Spinous processes of inferior 6 vertebrae & Thoracolumbar fascia (all lumbar vertebrae & posterior aspect of iliac crest)

Levator Scapulae

Transverse processes of upper 4 cervical vertebrae (C1-C4)

Rhomboid Major

Spinous processes of T2-T5

Rhomboid Minor

Lower part of ligamentum nuchae & spinous processes of C7 & T1

ANTERIOR Deltoid (clavicular)

Lateral 1/3 of clavicle

MIDDLE Deltoid (acromial)

Lateral border of acromion

POSTERIOR Deltoid (spinal)

Spine of scapula

Teres MAJOR

Posterior surface of inferior angle of scapula

Supraspinatus

Supraspinous fossa

Infraspinatus

Infraspinous fossa

Teres MINOR

Middle ½ of lateral border of scapula

Subscapularis

Subscapular fossa