FOM 25 Deep Back Muscles Flashcards Preview

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Flashcards in FOM 25 Deep Back Muscles Deck (40):
0

Splenus capitus and cervicis mm. ORIGIN

Ligamentum nuchae, T1-T4 spinous process

1

Splenius capitis and cervicis mm. INSERTION

mastoid process and superior nuchal line (capitis portion) C1-C4 transverse processes (cervicis portion)

2

Splenius capitis and cervicis mm. ACTIONS

Unilateral: lateral flexion, and ipsilateral rotation of head/neck
Bilateral: extension of head/neck

3

Erector spinae group ORIGIN and columns

Common tendon from posterior iliac crest, dorsal sacrum, and lumbar spinous processes; addition slips originate along the axial skeleton
- Intercostalis m.
- Longissimus m.
- Spinalis m.

4

Iliocostalis m. INSERTION

angles of the ribs (lumborum and thoracis) and cervical transverse processes

5

Longissimus m. INSERTION

Thoracic transverse processes and adjacent ribs (thoracis), cervical transverse processes (cervicis), mastoid process (capitis)

6

Spinalis m. INSERTION

Upper thoracic spinous processes (thoracis); cervical spinous processes and ligamentum nuchae (cervicis); occipital bone between nuchal lines (capitis, usually infused with semispinalis capitis

7

Erector spinae mg. ACTIONS

unilateral: lateral flexion and ipsilateral rotation of the trunk and head/neck
bilateral: extension of trunk and head/neck

8

Transversospinalis g. ORIGIN

Dorsal sacrum and posterior iliac crest, lumbar mamillary processes, cervical and thoracic transverse processes

9

Transversospinalis g. INSERTION

spinous processes and occipital bone

10

Semispinalis m.

Spans 5-6 segments, best defined in the cervical region
*Most superficial group of the transversospinalis mm.

11

Semispinalis cervicis

from the thoracic transverse processes to upper cervical spinous processes, up to C2 (axis)
*Superficial of the semispinalis mm. (superficial to semispinalis capitis)

12

Semispinalis capitis

From cervical transverse processes to occipital bone; major extensor of the head.
*Deep to the semispinalis cervicis

13

Multifidus m.

3-4 segments, best defined in lumbar region
*intermediate of the transversospinalis g. (deep to semispinalis m., superficial to Rotator m.)

14

Multifidus lumborum

Dorsal sacrum and lumbar mamillary processes to lumbar and lower thoracic spinous processes

15

Rotator m.

1-2 segments, best defined in thoracic region
*Deepest transversospinalis g. m.

16

Rotator longus

Spans 2 segments

17

Rotator brevis

spans 1 segment

18

Transversospinalis g. ACTION

Unilateral: lateral flexion, contralateral rotation of trunk, head/neck
Bilateral: extension of trunk head/neck

19

Levator costae m. ORIGIN

Transverse processes of thoracic vertebrae

20

Levator costae m. INSERTION

Superior borders of ribs (1 or 2 segments inferior)

21

Levator costae m. ACTIONS

Elevate ribs, assist in lateral flexion

22

Intersegemental muscles

Interspinalis m., Intertransverse m.
- High proportion of muscle spindles, primary function is proprioception

23

Interspinalis m.

Between adjacent spinous processes in the cervical and lumbar regions

24

Intertransverse m.

Between adjacent transverse processes in the cervical and lumbar regions

25

Thoracolumbar fascia

Posterior, middle, and anterior layer
*investing fascia of the intrinsic back muscles in the thoracic and lumbar regions

26

Posterior thoracolumbar fascia

Attached to the spinous processes. Thin in the thoracic region, but forms a dense aponeurosis in the lumbar region

27

Middle thoracolumbar fascia

Attaches to lumbar transverse processes, iliac crest, and rib 12; continues laterally with the aponeurosis of the transverse abdominis m.

28

Anterior thoracolumbar fascia

The anterior fascia of quadratus lumborum m.

29

Suboccipital mm.

Contribute to the deepest layer of dorsal cervical muscles
Innervated: dorsal ramus of C1, the suboccipital n.
*Rectus capitis posterior m., Rectus capitis posterior minor m., Obliquus capitis posterior m., Obliquus capitis inferior m.

30

Rectus capitis posterior major m.

ORIGIN: Spinous process of C2 (axis)
INSERTION: Inferior nuchal line
ACTION: bilateral extension and ipsilateral, unilateral rotation of head

31

Rectus capitis posterior minor m.

ORIGIN: Posterior tubercle of C1 (atlas)
INSERTION: Inferior nuchal line, medial to rectus capitis posterior major m.
ACTIONS: Extension of head (bilateral)

32

Obliquus capitis superior m.

ORIGIN: Transverse process of C1 (atlas)
INSERTION: Occiput between nuchal lines
ACTIONS: Extension of head (bilateral), lateral flexion of head (unilateral)

33

Obliquus capitis inferior m.

ORIGIN: Spinous process of C2 (axis)
INSERTION: Transverse process of C1 (atlas)
ACTIONS: Ipsilateral rotation of head (unilateral)

34

Suboccipital triangle

Rectus capitis posterior major m.
Obliquus capitis superior m.
Obliquus capitis inferior m.
Floor: posterior atlanto-occipital membrane and posterior arch of atlas
Roof: Semispinalis capitis m.
Contains: Vertebral a., suboccipital n.

34

Suboccipital triangle

Rectus capitis posterior major m.
Obliquus capitis superior m.
Obliquus capitis inferior m.
Floor: posterior atlanto-occipital membrane and posterior arch of atlas
Roof: Semispinalis capitis m.
Contains: Vertebral a., suboccipital n.

35

Vertebral a.

Exits from transverse foramen of C1.
Curves medially around posterior aspect of lateral mass of atlas
Pierces posterior atlanto-occipital membrane to enter foramen magnum

35

Vertebral a.

Exits from transverse foramen of C1.
Curves medially around posterior aspect of lateral mass of atlas
Pierces posterior atlanto-occipital membrane to enter foramen magnum

36

Suboccipital n.

Emerges from center of suboccipital triangle
Gives muscular branches to suboccipital muscles
The suboccipital n. lacks sensory fibers and has no cutaneous distibution

36

Suboccipital n.

Emerges from center of suboccipital triangle
Gives muscular branches to suboccipital muscles
The suboccipital n. lacks sensory fibers and has no cutaneous distibution