Superficial muscles of vertebral column

Spine processes and iliac crest

Origin of lats

Floor of intertubercular groove

Insertion of lats

Thoracodorsal

Nerve to lats

Extension, adduction, and internal rotation of shoulder

Action of lats

Spine processes C7-T12

Origin of traps

Spine of scapula and AC joint

Insertion of traps

Spinal accessorry

Nerve to traps

Elevate, retract, and depress scapula

Action of traps

T2-T5

Origin of rhomboid major

C7-T1

Origin of rhomboid minor

Spine of scapula

Insertion of rhomboids

Dorsal scapular

Nerve to rhomboids

Retract scapula

Action of rhomboids

Sternocleidomastoid

What muscle is this?

Mastoid process and superior nuchal line

Origin of sternocleidomastoid

Anterior manubrium and clavicle

Insert of sternocleidomastoid

CN XI/ spinal accessory

Nerve to sternocleidomastoid

Ipsilateral side bend and contralateral rotation; neck flexion

Action of sternocleidomastoid

C1-C4

Origin of levator scapulae

Superior medial border of scapula

Insert of levator scapulae

Dorsal scapular

Nerve to levator scapulae

Elevation and downward rotation

Action of levator scapulae

Serratus posterior superior

What muscle is this?

Serratus posterior inferior

What muscle is this?

Lower ligamentum nuchae and spin processes in lower cervical and upper thoracic

Origin of SPS

Upper ribs lateral to angle

Insert of SPS

Intercostal nerves

Nerve to serratus posterior muscles

Elevate ribs for inspiration

Action of SPS

Spine processes of lower thoracic and upper lumbar

Origin of SPI

Lower ribs lateral to posterior angles

Insert of SPI

Draw ribs downward and backward during inspiration

Action of SPI