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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