Thoracic Muscles

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created 7 years ago by Ali_Steph
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updated 7 years ago by Ali_Steph
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1

Splenius Capitis- Origin

Inferior one half of ligamentum nuchae and spinous procceses of C-7 to T-4

2

Splenius Capitis- Action

Unilaterally
- rotate the head and neck to the same side, laterally flex the head an neck to the same side

Bilaterally
-Extend the head and neck

3

Splenius Capitis- Insertion

mastoid process and lateral portion of the superior nuchal line

4

Splenius Cervicis- Origin

Spinous processes of T-3 to T-6

5

Splenius Cervicis- Action

Unilaterally
- rotate the head and neck to the same side, laterally flex the head an neck to the same side

Bilaterally
-Extend the head and neck

6

Splenius Cervicis- Insertion

Transverse processes of C-1 to C-3

7

Erector Spinae Group- Action

Unilaterally
-laterally flex the vertebral column to the same side.

Bilaterally
-extend the vertebral column

8

Erector Spinae Group- Origin

common tendon (thoracolumbar aponeurosis) that attaches to the posterior surface of sacrum, illiac crest ,spinious processes of the lumbar and last two thoracic vertebrae

9

Erector Spinae Group- Insertion

various attachments at the posterior ribs,spinous and transverse processes of thoracic and cervical vertebrae and mastoid process of temporal bone

10

intercostals- Action

external intercostals
-draw the ribs Superiorly (increasing the space of the thoracic cavity) to assist with inhalation

internal intercostals
-draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with exhalation

11

intercostals- Origin

inferior border of the rib above

12

intercostals-Insertion

superior border of the rib below

13

diaphram-Action

draw down the central tendon of the diaphram
increase the volume of the thoracic cavity during inhalation

14

diaphram- Origin

costal attachment
inner surface of lower six ribs
lumbar attachment
upper two or three lumbar vertebrae
sternal attachment inner part of xphoid process

15

diaphram- Insertion

central tendon

16

intercostals- Action

external intercostals
Draw the ribs superiorly (increasing the space of the thoracic cavity)to assist with inhalation

17

intercostals- Origion

inferior border of the rib above

18

intercostals- Insertion

superior border of the rib below

19

external obliques-Action

unilaterally
-laterally flex the vetebral column to the same side
-rotate vetebral column to the opposite side
bilaterally
-flex the vetebral column
-compress abdomonal contence

20

external obliques-Origion

external surfaces of the fifth to twelfth ribs

21

external obliques-Insertion

anterior part of the illiac crest, abdomonal aponerosis to linea alba

22

internal obliques-Action

unilaterally
-laterally flex the vetebral column to the same side
-rotate vetebral column to the same side
bilaterally
-flex the vetebral column
-compress abdomonal contence

23

internal obliques-Origion

lateral inguinal ligiment,illiac crest and thoracolumbar fascia

24

internal obliques-Insertion

internal surface of lower three ribs abdomonal aponerosis.

25

transverse abdominis- Action

compress abdomonal contence
Deepest and wraps around the abdomen

26

transverse abdominis- Origin

lateral inguinal ligiment,illiac crest thoracolumbar fascia and internal surface of lower six ribs

27

transverse abdominis- Insertion

abdomonal aponerosis to linea alba

28

Quadratus limborum- Action

umilaterally:
laterally tilt (elevate)the pelvis
laterally flex the vetebral column
assist to extend the vetebral column
bilaterally:
flex the last rib during forced inhaleaton and extention

29

Quadratus limborum- Origin

posterior illiac crest

30

Quadratus limborum-Insertion

last rib and transverse processes of first through fourth lumbar vertebrae

31

Suboccipitals
Rectus capitis posterior major- Action

Suboccipitals
Rectus capitis posterior minor- Action

Rotate and tilt the head back into extension
Rotate and tilt the head back into extension

32

Suboccipitals
oblique capitis superioir-Action
Suboccipitals
oblique capitis inferior-Action

rotate the head to the same side
laterally flex the head to the same side

33

Suboccipitals
Rectus capitis posterior major- Origion

spinous processes of the axis (c2)

34

Suboccipitals
Rectus capitis posterior major- Insertion

inferior nuchal line of the occiput

35

Suboccipitals
Rectus capitis posterior minor- Origin

Tubercle of the posterior arch of the atlas

36

Suboccipitals
Rectus capitis posterior minor- Insertion

inferior nuchal line of the occiput

37

Suboccipitals
oblique capitis superioir-Origin

Transverse processes of the atlas (C-1)

38

Suboccipitals
oblique capitis superioir-Insertion

Between the nuchal lines of the occiput

39

Suboccipitals
oblique capitis inferioir-Origin

spinous processes of the axis(c-2)

40

Suboccipitals
oblique capitis inferioir-Insertion

transverse processes of the atlas (c-1)

41

transverseoccipitals
Multifidi and Rotators- Action

Unilaterally:
Rotate the vertebral column to the opposite side
Bilaterally:
Extend the vetebral column

42

transverseoccipitals
Multifidi and Rotators- Origin

Multifidi:
Sacrum and transverse processes of lumbar through cervicle vertebrae
Rotators:
Transverse processes of lumbar vertebrae through cervicle vertebrae

43

transverseoccipitals
Multifidi and Rotators- Insertion

spinous processes of lumbar vertebrae through second cervicle vertebrae

44

semispinalis capitis-Action

Extend the vetebral column and head

45

semispinalis capitis-Origin

transverse processes of C-4 to T-5

46

semispinalis capitis-Insertion

Between the superior and inferior nuchal lines of the occiput

47

Flexors

always originate from medial epicondiale

48

Extenders

always originate from lateral epicondiale

49

linea alba deffinition

The linea alba is a fibrous structure that runs down the midline of the abdomen in humans and other vertebrates.