Back Superficial Muscles

Question 1

trapezius (origin)

Answer 1

occipital bone, ligamentum nuchae, spine of seventh cervical, and spines of all thoracic vertebrae

Question 2

trapezius (insertion)

Answer 2

upper fibers into lateral third of clavicle; middle and lower fibers into acromion and spine of scapula

Question 3

trapezius (nerve)

Answer 3

spinal part of accessory nerve (motor) and C3 and C4 (sensory)

Question 4

trapezius (action)

Answer 4

upper fibers elevate scapula; middle fibers pull scapula medially; lower fibers pull medial border of scapula downwards

Question 5

latissimus dorsi (origin)

Answer 5

iliac crest, lumbar fascia, lower six thoracic vertebrae, lower three or four ribs, and inferior angle of scapula

Question 6

latissimus dorsi (insertion)

Answer 6

floor of bicipital groove of humerus

Question 7

latissimus dorsi (nerve)

Answer 7

thoracodorsal nerve

Question 8

latissimus dorsi (action)

Answer 8

extends, adducts, and internal rotates arm

Question 9

levator scapulae (origin)

Answer 9

transverse processes of first four cervical vertebrae

Question 10

levator scapulae (insertion)

Answer 10

medial border of scapula

Question 11

levator scapulae (nerve)

Answer 11

C3 and C4 and dorsal scapular nerve

Question 12

levator scapulae (action)

Answer 12

raises medial border of scapula

Question 13

rhomboid minor (origin)

Answer 13

ligamentum nuchae and spines of seventh cervical and first thoracic vertebrae

Question 14

rhomboid minor (insertion)

Answer 14

medial border of scapula

Question 15

rhomboid minor (nerve)

Answer 15

dorsal scapular nerve

Question 16

rhomboid minor (action)

Answer 16

raises medial border of scapula upwards and medially

Question 17

rhomboid major (origin)

Answer 17

second to fifth thoracic spines

Question 18

rhomboid major (insertion)

Answer 18

medial border of scapula

Question 19

rhomboid major (nerve)

Answer 19

dorsal scapular nerve

Question 20

rhomboid major (action)

Answer 20

raises medial border of scapula upwards and medially