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Fundamentals of Anatomy > Axial Muscles OIA > Flashcards

Axial Muscles OIA Flashcards

1
Q

Masseter Origin

A

Zygomatic Arch

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2
Q

Masseter Insertion

A

Lateral surface and angle of mandible (outside)

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3
Q

Masseter Action

A

elevates the mandible, limited protrusion

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4
Q

Temporalis Origin

A

Along temporal lines of the skull

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5
Q

Temporalis Insertion

A

Coronoid Process

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6
Q

Temporalis Action

A

Assists in elevation, Posterior fibers are the main retrusors

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7
Q

Medial Pterygoid Origin

A

Medial surface of the lateral pterygoid plate of sphenoid bone

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8
Q

Medial Pterygoid Insertion

A

medial surface of ramus of mandible (angle of mandible inside)

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9
Q

Medial Pterygoid Action

A

elevation and protrusion of mandible

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10
Q

Lateral Pterygoid Origin

A

Lateral surface of lateral pterygoid plate of sphenoid bone

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11
Q

Lateral Pterygoid Insertion

A

neck of condyle of mandible

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12
Q

Lateral Pterygoid Action

A

depresses and protrudes mandible

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13
Q

Sternocleidomastoid Origin

A

Manubrium, sternal end of clavicle

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14
Q

Sternocleidomastoid Insertion

A

Mastoid Process and lateral half of superior nuchal line

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15
Q

Sternocleidomastoid Action

A

Together: Neck FLX, EXT of only upper Cx spine, assists in inspiration
Alone: Cervical side FLX to same side and ROT to opposite side

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16
Q

Anterior Scalene Origin

A

TPs of C3-C6

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17
Q

Anterior Scalene Insertion

A

1st rib

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18
Q

Anterior Scalene Action

A

elevate first rib during inspiration and ipsilateral cervical spine FLX

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19
Q

Middle Scalene Origin

A

TPs C5-C7

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20
Q

Middle Scalene Insertion

A

superior surface of 1st rib

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21
Q

Middle Scalene Action

A

Ipsilateral cervical spine FLX, elevates first rib during forced inspiration

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22
Q

Posterior Scalene Origin

A

TPs C5-C7

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23
Q

Posterior Scalene Insertion

A

2nd rib

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24
Q

Posterior Scalene Action

A

Ipsilateral cervical spine FLX, elevates 2nd rib during forced inspiration

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25
Q

Serratus Posterior Superior Origin

A

SP of C7-T3 and lig. nuchae

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26
Q

Serratus Posterior Superior Insertion

A

superior borders of 4 upper ribs (ribs 1-4)

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27
Q

Serratus Posterior Superior Action

A

elevates ribs during inspiration

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28
Q

Serratus Posterior Inferior Origin

A

SPs T11-L2

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29
Q

Serratus Posterior Inferior Insertion

A

inferior border of lower 4 ribs near angles (ribs 8-11)

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30
Q

Serratus Posterior Inferior Action

A

depresses ribs during expiration

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31
Q

Splenius Capitis Origin

A

SPs C7-T6 and nuchal lig.

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32
Q

Splenius Capitis Insertion

A

Mastoid Process, lateral 1/3 of superior nuchal line

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33
Q

Splenius Capitis Action

A

Unilaterally: ipsilateral side FLX, ipsilateral ROT
Bilaterally: EXT of neck

34
Q

Splenius Cervicis Origin

A

SPs C7-T6 and nuchal lig.

35
Q

Splenius Cervicis Insertion

A

TPs of C1-C4

36
Q

Splenius Cervicis Action

A

Unilaterally: Ipsilateral side FLX, ipsilateral ROT
Bilaterally: EXT of neck

37
Q

Spinalis Origin

A

broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament

38
Q

Spinalis Insertion

A

fibers of this muscle run superiorly to upper thoracic SPs and to cranium

39
Q

Longissimus Origin

A

broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament

40
Q

Longissimus Insertion

A

fibers run superiorly to ribs between the angles of ribs and costal tubercles (TPs), reaches mastoid process of temporal bone

41
Q

Iliocostalis Origin

A

broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament

42
Q

Iliocostalis Insertion

A

angles of ribs, TPs of cervical spine

43
Q

Erector Spinae Action

A

Bilaterally: EXT of vertebral column and head (main extensor of the spine)
Unilaterally: side FLX (ipsilateral)

44
Q

Semispinalis Origin

A

TPs of T12-C4 vertebrae

45
Q

Semispinalis Insertion

A

SPs of thoracic and cervical spine spanning 4-6 segments)

46
Q

Semispinalis Action

A

Bilaterally: extend the thoracic and cervical spine
Unilaterally: contralateral rotation of vertebral column

47
Q

Multifidus Origin

A

arises from posterior sacrum, PSIS, mamillary processes of Lumbar Vertebrae, upper thoracic TPs (T1-T3)

48
Q

Multifidus Insertion

A

SPs of 3rd or 4th more superior vertebrae (2-4 segments). Extends from TPs of S4 to C2

49
Q

Multifidus Action

A

extension, stabilize the vertebral column

50
Q

Rotatores Origin

A

TPs

51
Q

Rotatores Insertion

A

SPs of 1 segment (brevis) or 2 segments (longus)

52
Q

Rotatores Action

A

extends vertebral column, stabilizes vertebrae

53
Q

Oblique Capitis Inferior Origin

A

SP of C2

54
Q

Oblique Capitis Inferior Insertion

A

TP of C1

55
Q

Oblique Capitis Inferior Action

A

ipsilateral ROT

56
Q

Oblique Capitis Superior Origin

A

TP of C1

57
Q

Oblique Capitis Superior Insertion

A

between superior and inferior nuchal lines on the occiput

58
Q

Oblique Capitis Superior Action

A

Ipsilateral Side FLX and ext

59
Q

Rectus Capitis Posterior Major Origin

A

SP of C2

60
Q

Rectus Capitis Posterior Major Insertion

A

Inferior nuchal line (lateral aspect)

61
Q

Rectus Capitis Posterior Major Action

A

Cx EXT

62
Q

Rectus Capitis Posterior Minor Origin

A

Posterior tubercle of C1

63
Q

Rectus Capitis Posterior Minor Insertion

A

inferior nuchal line (medial aspect)

64
Q

Rectus Capitis Posterior Minor Action

A

Cx EXT

65
Q

Diaphragm Origin

A

Xiphoid Process, ribs 7-12 and cartilages, anterior bodies of upper lumbar spine
3 parts: sternal (2 slips attaching to xiphoid process), costal (inferior 6 costal cartilages), lumbar (arises from medial and lateral arcuate ligs. and 3 superior lumbar vertebrae.

66
Q

Diaphragm Insertion

A

central tendon

67
Q

Rectus Abdominis Origin

A

Pubis symphysis and the pubic crest

68
Q

Rectus Abdominis Insertion

A

Inferior cartilages Ribs 5-7 (3 ribs) and xiphoid process

69
Q

Rectus Abdominis Action

A

FLX of the trunk, depresses ribs, compresses abdomen, controls tilt of pelvis

70
Q

External Oblique Origin

A

Ribs 5-12 (inferior 8 ribs)

71
Q

External Oblique Insertion

A

linea alba, iliac crest, pubic tubercle

72
Q

External Oblique Action

A

Together: Trunk FLX
Alone: ipsilateral side flexion, contralateral rotation

73
Q

Internal Oblique Origin

A

thoracolumbar fascia, iliac crest, and inguinal ligament

74
Q

Internal Oblique Insertion

A

inferior surfaces of ribs 9-12, linea alba, pubis

75
Q

Internal Oblique Action

A

ipsilateral side FLX and ipsilateral ROT

76
Q

Transverse Abdominus Origin

A

cartilages of ribs 7-12, iliac crest, thoraco-lumbar fascia

77
Q

Transverse Abdominus Insertion

A

pubic crest and linea alba

78
Q

Transverse Abdominus Action

A

compresses abdomen and supports viscera

79
Q

Quadratus Lumborum Origin

A

iliac crest and iliolumbar ligament

80
Q

Quadratus Lumborum Insertion

A

12th rib and tips of TPs of lumbar spine

81
Q

Quadratus Lumborum Action

A

Together: Lumbar EXT
Alone: side FLX

Fundamentals of Anatomy (17 decks)

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