Musculature of the Neck + Thorax & Abdominal Muscles O.I.As

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29 Terms

1
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<p>Sternocleidomastoid – Origin</p>

Sternocleidomastoid – Origin

2 heads: Manubrium of sternum and clavicle

2
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<p>Intertransversarii –&nbsp;Origin</p>

Intertransversarii – Origin

Transverse processes of vertebrae

3
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<p>Interspinales – Origin</p>

Interspinales – Origin

Spinous process of vertebra

4
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<p>Rectus Abdominis – Origin</p>

Rectus Abdominis – Origin

Pubic crest

5
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<p>External Oblique –&nbsp;Origin</p>

External Oblique – Origin

Lower 8 ribs

6
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<p>Internal Oblique – Origin</p>

Internal Oblique – Origin

Inguinal ligament, iliac crest, and lumbodorsal fascia 

7
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<p>Transverse Abdominis – Origin</p>

Transverse Abdominis – Origin

Thoracolumbar facia, iliac crest, and cartilages of lower ribs

8
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<p>External Intercostals –&nbsp;Origin </p>

External Intercostals – Origin

Inferior border of each rib

9
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<p>Internal Intercostals – Origin</p>

Internal Intercostals – Origin

Superior border of each rib

10
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<p>Sternocleidomastoid –&nbsp;Insertion</p>

Sternocleidomastoid – Insertion

Mastoid process of temporal bone

11
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<p>Intertransversarii – Insertion</p>

Intertransversarii – Insertion

Transverse process of vertebra above

12
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<p>Interspinales – Insertion</p>

Interspinales – Insertion

Spinous process of vertebra above

13
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<p>Rectus Abdominis –&nbsp;Insertion</p>

Rectus Abdominis – Insertion

Xiphoid process and costal cartilages of ribs 5-7

14
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<p>External Oblique – Insertion</p>

External Oblique – Insertion

Linea alba and anterior iliac crest 

15
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<p>Internal Oblique –&nbsp;Insertion</p>

Internal Oblique – Insertion

Linea alba, public crest, and lower ribs

16
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<p>Transversus Abdominis –&nbsp;Insertion </p>

Transversus Abdominis – Insertion

Linea alba and public crest

17
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<p>External Intercostals – Insertion</p>

External Intercostals – Insertion

Superior border of ribs below

18
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<p>Internal Intercostals – Insertion</p>

Internal Intercostals – Insertion

Inferior border of ribs above

19
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<p>Sternocleidomastoid – Action</p>

Sternocleidomastoid – Action

Flexes and rotates cervical vertebral column

20
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<p>Erector Spinae Group –&nbsp;Action<br>Spinalis Group <br>Longissiumus Group<br>Iliocostalis Group </p>

Erector Spinae Group – Action
Spinalis Group
Longissiumus Group
Iliocostalis Group

Extends and laterally flexes vertebral column, head, and neck

21
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Intertransversarii – Action

Laterally flexes vertebral column

22
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Interspinales – Action

Extends vertebral column

23
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<p>Rectus Abdominis –&nbsp;Action</p>

Rectus Abdominis – Action

Compresses abdominopelvic cavity, flexes and rotates vertebral column

24
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<p>External Oblique – Action</p>

External Oblique – Action

Compresses abdominopelvic cavity, flexes and rotates vertebral column

25
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Internal Oblique – Action

Compresses abdominopelvic cavity, flexes and rotates vertebral column

26
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<p>Transverse Abdominis –&nbsp;Action</p>

Transverse Abdominis – Action

Compresses abdominopelvic cavity

27
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<p>External Intercostals – Action</p>

External Intercostals – Action

Elevates ribs

28
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<p>Internal Intercostals – Action</p>

Internal Intercostals – Action

Depresses ribs

29
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<p>Diaphragm – Action</p>

Diaphragm – Action

Elevates lower ribs, expands thoracic cavity for breathing