Superficial Back Muscles

Question 1

Latissimus Dorsi Purposeful Activity

Answer 1

wheelchair mobility, standing from sitting

Question 2

Latissimus Dorsi Action

Answer 2

extend shoulder
adduct shoulder
internally rotate shoulder

Question 3

Latissimus Dorsi PA

Answer 3

spinous processes of T7-T12, thoracolumbar fascia, iliac crest, ribs 9/10-12, inferior angle of scapula*

Question 4

Latissimus Dorsi DA

Answer 4

intertubercular sulcus of humerus

Question 5

Latissimus Dorsi Innervation

Answer 5

thoracodorsal nerve C6, C7, C8

Question 6

Trapezius Purposeful Action

Answer 6

reaching for an object overhead, rowing

Question 7

Upper Trapezius Action

Answer 7

(bilaterally) extend head and neck
(unilaterally) laterally flex head and neck
rotate head and neck to opposite side
elevate scapula
upwardly rotate scapula

Question 8

Middle Trapezius Action

Answer 8

adduct/retract scapula
stabilize scapula

Question 9

Lower Trapezius Action

Answer 9

depress scapula
upwardly rotate scapula

Question 10

Trapezius PA

Answer 10

external occipital protuberance, superior nuchal line of occiput, ligamentum nuchae, spinous processes of C7-T12

Question 11

Trapezius DA

Answer 11

lateral 1/3 of clavicle, acromion, spine of scapula

Question 12

Trapezius Innervation

Answer 12

spinal accessory nerve (cranial nerve XI), ventral rami C3 and C4

Question 13

Levator Scapulae Purposeful Activity

Answer 13

shrugging shoulders, carrying object on one side

Question 14

Levator Scapulae Action

Answer 14

elevate scapula
downwardly rotate scapula

Question 15

Levator Scapulae PA

Answer 15

transverse processes of C1-C4

Question 16

Levator Scapulae DA

Answer 16

medial border of scapula b/w superior angle and root of spine of scapula

Question 17

Levator Scapulae Innervation

Answer 17

cervical C3 and C4, dorsal scapular nerve C4 and C5

Question 18

Rhomboids Purposeful Activity

Answer 18

reaching into back pocket

Question 19

Rhomboids Action

Answer 19

adduct/retract scapula
downwardly rotate scapula
fix scapula to thoracic wall

Question 20

Rhomboids PA

Answer 20

(major) spinous processes of T2-T5
(minor) nuchal ligament and spinous processes of C7-T1

Question 21

Rhomboids DA

Answer 21

(major) medial border of scapula b/w spine and inferior angle
(minor) medial border of scapular spine

Question 22

Rhomboids Innervation

Answer 22

dorsal scapular nerve C4 and C5