Superficial Back + Intermediate

Question 1

Upper Trap Origin

Answer 1

Medial 1/3 superior nuchal line, external occipital protuberance, ligamentum nuchae, and spinous process of C7

Question 2

Upper Trap Insertion

Answer 2

Posterior border of lateral 1/3 of clavicle

Question 3

Middle Trap Origin

Answer 3

Spinous process of T1-T6 and supraspinous ligament

Question 4

Middle trap insertion

Answer 4

Medial border of acromion and superior lip of scapular spine

Question 5

Lower Trap Origin

Answer 5

Spinous process of T7-T12 and supraspinous ligament

Question 6

Lower Trap insertion

Answer 6

Triangular area medial to base of scapular spine

Question 7

Trapezius Innervation

Answer 7

Motor: Spinal part of cranial nerve XI
Sensory: Branches from ventral rami of C3 and C4

Question 8

Trapezius Blood Supply

Answer 8

Variation 1: Superior cervical a., posterior branches of posterior intercostal a., dorsal scapular a.
Variation 2: Superficial branch of transverse cervical a, posterior branch of posterior intercostal a., and deep branch of transverse cervical a.

Question 9

Upper Trap Action

Answer 9

OC: Scapular elevation
CC:
Unilaterally- ipsilateral side bend and contralateral rotation of head and neck
Bilaterally- Extension of head and neck

Question 10

Middle Trap Action

Answer 10

OC: Scapular retraction

Question 11

Lower Trap Action

Answer 11

OC: scapular upward rotation and downward slide

Question 12

Latissimus Dorsi Origin

Answer 12

Spinous process of T7-L5, Iliac Crest, ribs 9-12, Thoracolumbar fascia

Question 13

Latissimus Dorsi Insertion

Answer 13

Floor of intertubercular groove of humerus

Question 14

Latissimus dorsi Innervation

Answer 14

Thoracodorsal n. (C6,C7,C8)

Question 15

Latissimus dorsi Blood Supply

Answer 15

Thoracodorsal a., posterior branch of posterior intercostal a., lumbar a.

Question 16

Latissimus dorsi Action

Answer 16

OC: adducts, extends, and medial rotates humerus. Assist with scapular depression
CC: Trunk elevation

Question 17

Rhomboid major Origin

Answer 17

Spinous process of T2-T5

Question 18

Rhomboid major Insertion

Answer 18

Medial and Inferior border of scapula below root of scapular spine

Question 19

Rhomboid major Innervation

Answer 19

Dorsal scapular nerve (C4 and C5)

Question 20

Rhomboid major Blood Supply

Answer 20

Deep branch of the transverse cervical a., or the dorsal scapular a., and posterior branch of the posterior intercostal a.

Question 21

Rhomboid major Action

Answer 21

OC: Scapular retraction and downward rotation. Assist with upward slide

Question 22

Rhomboid minor Origin

Answer 22

Spinous process of C7 and T1, and lower nuchae ligament

Question 23

Rhomboid minor Insertion

Answer 23

Medial border of scapula. Level with the root of scapular spine

Question 24

Rhomboid minor Innervation

Answer 24

Dorsal scapular nerve (C4,C5)

Question 25

Rhomboid minor blood supply

Answer 25

Dorsal scapular a. Deep branch of the transverse cervical a. Post. branch of post. intercostal a.

Question 26

Rhomboid minor Action

Answer 26

OC: Scapular retraction and downward rotation. Assist with upward slide.

Question 27

Levator scapula origin

Answer 27

Posterior tubercles on transverse process of C1-C4

Question 28

Levator scapula insertion

Answer 28

Medial border of scapula between scapular spine root and superior angle

Question 29

Levator scapula Innervation

Answer 29

Ventral Rami (C3 and C4) Dorsal scapular nerve (C5)

Question 30

Levator scapula Blood Supply

Answer 30

Deep branch of transverse cervical a. or dorsal scapular a. Post branches of post intercostal a.

Question 31

Levator scapula Action

Answer 31

OC: Scapular upward slide and downward rotation CC: ipsilateral side bend and rotation of neck

Question 32

Serratus posterior superior Origin

Answer 32

Thin aponeurosis to spinous process of C7-T3 and their supraspinous ligament

Question 33

Serratus posterior superior Insertion

Answer 33

Ribs 2-5 along superior border on external surfaces lateral to rib angles

Question 34

Serratus posterior superior Innervation

Answer 34

Segmental branch of intercostal nerve (T2-T5)

Question 35

Serratus posterior superior Blood Supply

Answer 35

Posterior branch of posterior intercostal a.

Question 36

Serratus posterior superior Action

Answer 36

Elevates ribs

Question 37

Serratus posterior inferior Origin

Answer 37

Thin aponeurosis to spinous process of T11-L2 and their supraspinous ligament

Question 38

Serratus posterior inferior Insertion

Answer 38

Ribs 9-12 along inferior border on external surfaces anterolateral to their rib angles

Question 39

Serratus posterior inferior Innervation

Answer 39

Ventral rami of T9-T11 spinal nerve

Question 40

Serratus posterior inferior Blood Supply

Answer 40

Posterior branch of posterior intercostal a.

Question 41

Serratus posterior inferior Action

Answer 41

Depresses ribs