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Flashcards in Deep back muscles Deck (36):
1

Splenius cervicis attachment

spinous process of T3-6 to transverse process of C1-3

2

Splenius cervicis innervation

dorsal rami of mid cervical nerves

3

Splenius capitis attachment

spinous process of C7-T4 and lower ligamentum nuchae TO lateral 3rd superior nuchal line on occiput and mastoid process on temporal bone

4

Splenius capitis innervation

dorsal rami of lower cervical nerves

5

Splenius cervicis and splenius capitis action

extensors of head and neck when contracted bilat, rotators of head and neck with unilateral contraction

6

Spinotransveralis group

splenius cervicis and splenius capitis

7

Erector spinae muscles

iliocostalis, longissimus, and spinalis
(individual fibers spanning 6-10 vertebral levels all from common tendon)

8

Iliocostalis lumborum attachment

common tendon to the angle of lower 7 ribs

9

Iliocostalis thoracis attachment

angle of lower 6 ribs to angle of upper 6 ribs and transverse process of C7

10

Iliocostalis cervicis attachment

angle of ribs 3-6 to transverse processes of C4-6

11

Longissimus capitis attachment

transverse processes of C4-T5 and articular processes of lower 4 cervical vertebrae to mastoid process

12

Longissimus cervicis attachment

transverse processes of T1-5 to transverse processes of C2-6

13

Longissimus thoracis attachment

common tendon and transverse processes of all lumbar vertebrae to transverse processes of all throacic vertebrae and ribs 2-12

14

Spinalis thoracis attachment

spinous processes of T10-L3 to spinous processes of T1-8

15

Spinalis cervicis and spinalis capitis attachment

lower ligamentum nuchae and spinous process of C7 to spinous process of C2

16

Erector spinae muscles innervation

dorsal rami of each region

17

Erector spinae muscles action

extend back and neck when contracting bilat
laterally flex back when contracted unilaterally

18

Transversospinalis group

semispinalis, multifidus, and rotatores

19

Semispinalis thoracis attachment

transverse process of T6-T10 to spinous process of C5-T4

20

Semispinalis cervicis attachment

transverse process of T1-8 to spinous process of C2-5

21

Semispinalis capitis attachment

transverse process of T6-C7, and articular processes of C4-6 TO occipital bone between inferior and superior nuchal lines

22

Semispinalis action

extension of the neck and rotation of head

23

Multifidus (span 2-4 levels) attachment

sacrum, PSIS, mammillary processes of the lumbar vertebrae, transverse processes of the thoracic vertebrea, and articular processes of lower 4 cervical vertebrae TO base of the spinous processes of all vertebra L5-C2 (most prominent in the lumbar region)

24

Multifidus action

stabilization of vertebral column

25

Rotatores longi attachment

transverse processes to the spinous process of segment two levels higher (most pronounced in the thoracic region but present over entire spine)

26

Rotatores brevis attachment

transverse processes to the spinous process of one level higher

27

Rotatores action

stabilizes, extends, and rotates spine

28

Transversospinalis group innervation

dorsal rami of the spinal nerves

29

suboccipital muscles

obliquus capitis and rectus capitis posterior

30

Obliquus capitis inferior attachent

spinous process of C2 to transverse process of C1

31

Obliquus capitis inferior action

unilateral contraction rotates head to same side

32

Obliquus capitis superior attachment

transverse process of C1 to occipital bone above inferior nuchal line

33

Rectus capitis posterior major attachment

spinous process of C2 to occipital bone below inferior nuchal line

34

Obliquus capitis superior and Rectus capitis posterior major action

bilateral contraction extends head, unilateral to bend head to same side

35

Rectus capitis posterior minor attachment

posterior tubercle of C1 to occipital bone below inferior nuchal line superolaterally

36

Rectus capitis posterior minor action

bilateral to contribute to head extension