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Question 1

Origin of Trapezius

Answer 1

upper = occipital bone

middle/lower = ligamentum nuchae and SP of C7 - T12

Question 2

Insertion of Trapezius

Answer 2

upper = lateral clavicle

middle = acromion

lower = spine of scapula

Question 3

action of trapezius

Answer 3

upper fibers

• bilaterally extend the head and neck
• unilaterally laterally flex head and neck to the same side
• rotate the head and neck to the opposite side
• elevate and upwardly rotate the scapula

middle fibers
- adduct and stabilize the scap

lower fibers
- depress and upwardly rotate the scap

Question 4

innervation of trapezius

Answer 4

CN XI and ventral ramus of C2 - C4

Question 5

origin of latissimus dorsi

Answer 5

1. inferior angle of scap
2. SP of last 6 thoracic vert
3. last 3 or 4 ribs
4. thoracolumbar aponeurosis
5. posterior iliac crest

Question 6

insertion of latissimus dorsi

Answer 6

intertubercular groove of the humerus

Question 7

action of latissimus dorsi

Answer 7

extend, adduct and internally rotate the shoulder

Question 8

innervation of latissimus dorsi

Answer 8

thoracodorsal nerve C6, 7, 8

TD 6, 7, 8

Question 9

origin of levator scapulae

Answer 9

TP of C1 - C4

Question 10

insertion of levator scapulae

Answer 10

medial border of the scap (between superior angle and superior portion of spine of scap)

Question 11

action of levator scapulae

Answer 11

unilaterally

• elevate and downwardly rotate scap
• laterally flex head and neck
• rotate head and neck to the same side

bilaterally
- extend the head and neck

Question 12

innervation of levator scapulae

Answer 12

C3 - 4

dorsal scapular nerve C4 - 5

Question 13

origin of rhomboid major

Answer 13

SP T2 - T5

Question 14

insertion of rhomboid major

Answer 14

medial border of the scap between spine of scap and inferior angle

Question 15

action of rhomboid major

Answer 15

adduct, elevate and downwardly rotate scap

Question 16

innervation of rhomboid major

Answer 16

dorsal scap nerve c 4,5

Question 17

origin of rhomboid minor

Answer 17

SP C7 - T1

Question 18

insertion of rhomboid minor

Answer 18

upper portion of medial border of the scap, across from the spine of scap

Question 19

action of rhomboid minor

Answer 19

adduct, elevate and downwardly rotate scap

Question 20

innervation of rhomboid minor

Answer 20

dorsal scap C4, 5

Question 21

origin of serratus posterior superior

Answer 21

SP C7 - T3

Question 22

insertion of serratus posterior superior

Answer 22

posterior surface of ribs 2 - 5

Question 23

action of serratus posterior superior

Answer 23

elevate ribs during inhalation

Question 24

innervation of serratus posterior superior

Answer 24

intercostal nerve T1 - 4

Question 25

origin of serratus posterior inferior

Answer 25

SP T12 - L3

Question 26

insertion of serratus posterior inferior

Answer 26

posterior surface of ribs 9 - 12

Question 27

action of serratus posterior inferior

Answer 27

depress the ribs during exhalation

Question 28

innervation of serratus posterior inferior

Answer 28

intercostal nerves T9 - 12

Question 29

origin of iliocostalis

Answer 29

lumborum = common tendon thoracis and cervicis = posterior surface of ribs 1 - 12

Question 30

insertion of iliocostalis

Answer 30

lumborum = TP L1 - L3, posterior surface of ribs 6 - 12 thoracic = posterior surface ribs 1 - 6 cervicis = TP lower cervicals

Question 31

action of iliocostalis

Answer 31

unilaterally = laterally flex vertebral column to the same side bilaterally = extend vertebral column

Question 32

innervation of iliocostalis

Answer 32

spinal nerves

Question 33

origin of longissimus

Answer 33

thoracis = common tendon cervicis and capitis = TP of upper 5 thoracic vertebrae

Question 34

insertion of longissimus

Answer 34

thoracis = lower 9 ribs and TP of thoracic vertebrae cervicis = TP of cervical vertebrae capitis = mastoid process of temporal bone

Question 35

innervation of longissimus

Answer 35

spinal nerves

Question 36

origin of spinalis

Answer 36

thoracis - SP of the upper lumbar and lower thoracic vertebrae cervicis - ligamentum nuchae - SP C7

Question 37

insertion of spinalis

Answer 37

thoracis = SP of upper thoracic cervicis = SP of cervicals, except C1

Question 38

action of spinalis

Answer 38

unilaterally - laterally flex vertebral column to the same side bilaterally - extend the vertebral column

Question 39

innervation of spinalis

Answer 39

spinal nerves

Question 40

origin of multifidus

Answer 40

sacrum and TP of lumbar through cervical vertebrae

Question 41

insertion of multifidus

Answer 41

SP of lumbar vertebrae C2

Question 42

action of multifidus

Answer 42

unilaterally - rotate vertebral column to the opposite side bilaterally - extend the vertebral column

Question 43

innervation of multifidus

Answer 43

spinal nerves

Question 44

origin of rotatores

Answer 44

TP of lumbar through cervical vertebrae (span 2 to 4 vertebrae)

Question 45

insertion of rotatores

Answer 45

SP of lumbar vertebrae to C2 (span 1 to 2 vertebrae)

Question 46

action of rotatores

Answer 46

unilaterally - rotate vertebral column to the opposite side bilaterally extend the vertebral column

Question 47

innervation of rotatores

Answer 47

spinal nerves