M/S UPPER BACK

Question 1

Trapezius proximal attachement

Answer 1

medial third superior nuchal line; external occipital protuberance; nuchal ligament; spinous processes of C7-T12 vertebrae

Question 2

Distal attachment of trapezius

Answer 2

Lateral third of clavicle; acromion and spine of scapula

Question 3

Innervation of trapezius

Answer 3

spinal accessory nerve (CNXI) (motor fibers) and C3, C4 spinal nerves (pain and proprioceptive fibers)

Question 4

Muscle action of trapezius

Answer 4

Descending part elevates; ascending part depresses and middle part (all parts together) retracts scapula; descending and ascending parts at together to rotate glenoid cavity superiorly

Question 5

Proximal attachment of the latissimus dorsi

Answer 5

Spinous processes of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, and inferior 3 or 4 ribs

Question 6

distal attachment of the latissimus dorsi

Answer 6

floor of inter tubercular sulcus of humerus

Question 7

innervation of the latissimus dorsi

Answer 7

thoracodorsal nerve (C6, C7 and come C8)

Question 8

Muscle action of the latissimus dorsi

Answer 8

Extends, adducts, and medially rotates humerus; raises body toward arms during climbing

Question 9

Proximal attachment of the Levator scapulae

Answer 9

posterior tubercles of transverse processes of C1-C4 vertebrae

Question 10

Distal attachment of the Levator scapulae

Answer 10

Medial border of scapula superior to root of scapular spine

Question 11

Innervation of the levator scapulae

Answer 11

dorsal scapular (C5) and cervical (C3, C4) nerves

Question 12

Muscle action of the levator scapulae

Answer 12

Elevates the scapula and tilts its glenoid cavity inferiorly by rotating scapula

Question 13

Rhomboid minor and major proximal attachment

Answer 13

minor: Nuchal attachement; spinous processes of C7 and T1 vertebrae
major: spinous process of T2-T5 vertebrae

Question 14

Rhomboid minor and major distal attachment

Answer 14

Minor: Smooth triangular area at medial end of scapular spine
Major: medial border of scapula from level of spine to inferior angle

Question 15

Innervation for rhomboid minor and major

Answer 15

Dorsal scapular nerve (C4, C5)

Question 16

Muscle action of rhomboid minor and major

Answer 16

retract scapula and rotate it to depress glenoid cavity; fix scapula to thoracic wall

Question 17

muscles that make the rotator cuff

Answer 17

the supraspinatus, the infraspinatus, the subscapularis, and the teres minor