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Flashcards in Back Deck (28):
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Trapezius origin

External occipital protuberance, superior nuchal line, ligamentum nuchae, spinous processes of C7 and thoracic vertebrae

1

Trapezius insertion

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

2

Trapezius innervation

Accessory nerve

3

Trapezius action

Superior fibers elevate and laterally rotate scapula
Middle fibers retract scapula
Inferior fibers depress and laterally rotate scapula

4

Lattisimus dorsi origin

Spinous processes of lower thoracic and lumbar vertebrae, iliac crest, sacrum

5

Lattisimus dorsi insertion

Intertubercular groove of humerus

6

Lattisimus dorsi innervation

Thoracodorsal nerve

7

Lattisimus dorsi action

Extends, adducts and medially rotates humerus

8

Levator scapulae origin

Transverse processes of upper cervical vertebrae

9

Levator scapulae insertion

Superior angle of scapula

10

Levator scapulae innervation

Dorsal scapular nerve

11

Levator scapulae action

Elevates scapula

12

Rhomboid major and minor origin

Spinous processes of lower cervical and upper thoracic vertebrae

13

Rhomboid major and minor insertion

Medial border of scapula

(rhomboid minor superior to the spine; rhomboid major inferior to the spine)

14

Rhomboid major and minor innervation

Dorsal scapular nerve

15

Rhomboid major and minor action

Retracts and medially rotates scapula

16

Splenius capitis and cervicis origin

Ligamentum nuchae, spinous processes of C7 and upper thoracic vertebrae

17

Splenius capitis and cervicis insertion

Capitis: mastoid process and superior nuchal line

Cervicis: transverse processes of upper cervical vertebrae

18

Splenius capitis and cervicis innervation

Dorsal rami of spinal nerves

19

Splenius capitis and cervicis action

Acting bilaterally, they extend the head and neck; acting unilaterally, they rotate the head to one side

20

Erector spinae origin

Sacrum, iliac crest, ribs, spinous and transverse processes of vertebrae

21

Erector spinae insertion

Spinous and transverse processes of vertebrae, ribs, skull

22

Erector spinae innervation

Dorsal rami of spinal nerves

23

Erector spinae action

Acting bilaterally, they extend the head and trunk; acting unilaterally, they bend the trunk laterally; they are also important for “controlling” flexion

24

Semispinalis capitis origin

Transverse processes of lower cervical and upper thoracic vertebrae

25

Semispinalis capitis insertion

Occipital bone near nuchal lines

26

Semispinalis capitis innervation

Dorsal rami of spinal nerves

27

Semispinalis capitis action

Acting bilaterally, they extend the head; acting unilaterally, they rotate the head to one side