POSITION THE PECTORAL GIRDLE

Levator Scapulae (Origin)

Vertebrae C1-C4

Levator Scapulae(Insertion)

Vertebral border of scapula

Levator Scapulae(action)

elevates the scapula

Pectoralis Minor (origins)

Ribs 3-5

Pectoralis Minor(Insertion)

Coracoid process of scapula

Pectoralis Minor(action)

when ribs are fixed it pulls the scapula downward and forward, assists in inspiration when the scapula is fixed

Rhomboid minor (origins)

vertebrae C7-T1

Rhomboid minor(insertion)

medial border of the scapula

Rhomboid minor(action)

adducts the scapula

Rhomboid major(origin)

vertebrae T1 and T5

Rhomboid major (insertion)

medial scapula border

Rhomboid major(action)

adducts the scapula

Subclavius(origin)

superior border of rib 1

subclavius(insertion)

inferior border of clavicle

Subclavius(action)

depresses the clavicle

Serratus anterior (origin)

ribs 1-9

serratus anterior (insertion)

medial border of the scapula

Serratus anterior (action)

scapula fixator

Trapezius(origin)

nuchal ligament of the occipital bone

trapezius(insertion)

the clavicle, scapular spine, and acromion of the scapula

trapezius(action)

contractions of all the fibers, adducts the scapula, contraction of upper fibers elevates the scapula contraction of lower fibers depresses the scapula