Extrinsic muscles of the back

Question 1

Trapezius insertion

Answer 1

Acromion
Lateral clavicle
Spine of scapula

Question 2

Trapezius nerve innervation - motor

Answer 2

Spinal accessory CN XI

Question 3

Trapezius nerve innervation - sensory

Answer 3

C3, C4

Question 4

Trapezius action

Answer 4

Elevate
Retract
Depress

Question 5

Trapezius origin

Answer 5

EOP
Medial superior nuchal line
Spinous process C7 to T12
Nuchal ligament

Question 6

Latissimus dorsi origin

Answer 6

Thoracolumbar fascia
Iliac crest
Inferior 3 or 4 ribs
Spinous process of T6 to T12

Question 7

Latissimus dorsi insertion

Answer 7

Floor of intertubercle sulcus of humerus

Question 8

Latissimus dorsi nerve innervation

Answer 8

Thoracodorsal nerve C6, C7, C8

Question 9

Latissimus dorsi action

Answer 9

Addicts

Medially rotates and extends humerus

Question 10

Levator scapulae origin

Answer 10

Posterior tubercle of transverse process of C1 to C4

Question 11

Levator scapulae insertion

Answer 11

Medial border of scapula superior to root of the spine

Question 12

Levator scapulae nerve innervation

Answer 12

C3
C4
Dorsal scapular nerve C5

Question 13

Levator scapulae action

Answer 13

Elevates scapula and downwardly rotates glenoid

Question 14

Rhomboid major origin

Answer 14

Spinous process T2 to T5

Question 15

Rhomboid major insertion

Answer 15

Medial border of scapula at root of the spine

Question 16

Rhomboid major nerve innervation

Answer 16

Dorsal scapular nerve C5

Question 17

Rhomboid major action

Answer 17

Retract scapula and downwardly rotate glenoid

Fix scapula to thoracic wall

Question 18

Rhomboid minor origin

Answer 18

Spinous process C7 to T1

Nuchal ligament

Question 19

Rhomboid minor insertion

Answer 19

Medial border of scapula at level of spine to inferior angle

Question 20

Rhomboid minor nerve innervation

Answer 20

Dorsal scapular nerve C5

Question 21

Rhomboid minor action

Answer 21

Retract scapula and downwardly rotate glenoid