table9.2

Question 1

trapezius

Answer 1

origin: all thoracic and cervical spinous processes, ligamentum nuchae, superior nuchal line
Insertion: spine and acromion of scapula, superior lateral third of clavicle.

action: elevate scapula, depress scapula, retract and laterally rotate scapula

Question 2

latissmus dorsi

Answer 2

origin: T6 to T12 transverse processes, iliac crest, lumbodorsal fascia, inferior 3 or 4 ribs
Insertion: intertubercular sulcus of humerus (anterior)

action: adduct, extend, medially rotate arm

Question 3

levator scapulae

Answer 3

origin: Transverse processes of C1 to C4
Insertion : superior aspect vertebral border of scapula

action: elevate scapula , rotate scapula medially

Question 4

rhomboids

Answer 4

origin: spinous process of C7 to T5
insertion: vertebral border of scapula

action: retract scapula, medially rotate scapula