Thoracic spine - origin, insertions and actions Flashcards

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1
Q

what is the origin of the erector spinae - iliocostalis thoracis?

A

TP of c7

top of lower 6 ribs

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2
Q

what is the insertion of the erector spinae - iliocostalis thoracis?

A

top of upper 6 ribs

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3
Q

what is the action of the erector spinae - iliocostalis thoracis?

A

extension and side flexion

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4
Q

what is the origin of the erector spinae - spinalis thoracis?

A

SP of T11, T12, L1 and L2

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5
Q

what is the insertion of the erector spinae - spinalis thoracis?

A

SP of T4 - T8

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6
Q

what is the action of the erector spinae - spinalis thoracis?

A

extension

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7
Q

what is the origin of the erector spinae - longissimus thoracis?

A

TP of lumbar

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8
Q

what is the insertion of the erector spinae - spinalis thoracis?

A

TP of thoracic

lower 9 ribs

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9
Q

what is the action of the erector spinae - spinalis thoracis?

A

extension and side flexion

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10
Q

what is the origin of the semispinalis?

A

AP of C3 - C6

TP of C7, T1 - T6

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11
Q

what is the insertion of the semispinalis?

A

nuchal line of occipital bone

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12
Q

what is the action of the semispinalis?

A

vertebral column extension and draws head backwards

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13
Q

what is the origin of the rotatores?

A

TP of thoracic spine

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14
Q

what is the insertion of the rotatores?

A

SP 1-2 levels above its origin

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15
Q

what is the action of the rotatores?

A

extension and rotation

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16
Q

what is the origin of the rhomboid major and minor?

A

minor - C7 - T1

major - T2 - T5

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17
Q

what is the insertion of the rhomboid major and minor?

A

medial border of the scapular

18
Q

what is the action of the rhomboid major and minor?

A

retraction of the scapular

19
Q

what is the origin of the trapezius?

A

T1 - T12

occipital bone

20
Q

what is the insertion of the trapezius?

A

lateral third of clavicle, acromion and spine of the scapular

21
Q

what is the action of the trapezius?

A

upper - elevates shoulders and extends the head

middle - retracts shoulders

lower - depresses shoulders

22
Q

what is the origin of the serratus anterior?

A

1st - 9th rib

22
Q

what is the insertion of the serratus anterior?

A

medial border of the scapular

23
Q

what is the action of the serratus anterior?

A

protraction and upwards rotation of the scapular

24
Q

what is the origin of the serratus posterior inferior?

A

SP of T11 - L3

25
Q

what is the insertion of the serratus posterior inferior?

A

lower 9-12 ribs

26
Q

what is the action of the serratus posterior inferior?

A

draws ribs down and back

27
Q

what is the origin of the serratus posterior superior?

A

SP of C7 - T3

28
Q

what is the insertion of the serratus posterior superior?

A

upper 2-5 ribs

29
Q

what is the action of the serratus posterior superior?

A

elevates upper ribs

30
Q

what is the origin of the pectorals minor?

A

ribs 3-5

31
Q

what is the insertion of the pectorals minor?

A

coracoid process

32
Q

what is the action of the pectorals minor?

A

elevates ribs and depresses scapular

33
Q

what is the origin of the diaphragm?

A

XP, ribs 7-12 and anterior surface L1 - L3

34
Q

what is the insertion of the diaphragm?

A

blends with the Anterior Longitudinal Ligament on the spine

35
Q

what is the action of the diaphragm?

A

expands thoracic cavity and compresses abdominal cavity

36
Q

what is the origin of the internal intercostals?

A

superior border of ribs 2-12

37
Q

what is the insertion of the internal intercostals?

A

inferior border of ribs 2-12

38
Q

what is the action of the internal intercostals?

A

depresses ribs and forced expiration

39
Q

what is the origin of the external intercostals?

A

lower ribs 1-11

40
Q

what is the insertion of the external intercostals?

A

upper borders of ribs 1-11

41
Q

what is the action of the external intercostals?

A

elevates ribs and inhalation