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Muscles > Back/Neck > Flashcards

Back/Neck Flashcards

1
Q

What are the Erector Spinae Muscles?

A

Iliocostalis, longissimus, spinalis

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2
Q

Erector Spinal Muscles - Medial to Lateral

A

Spinalis -> Longissimus -> Iliocostalis

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3
Q

Iliocostalis Action

A

extends and laterally bends the trunk and neck, and rotates the head to the same side

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4
Q

Iliocostalis Blood Supply

A

Supplied Segmentally by deep cervical artery, posterior intercostal artery, subcostal artery, lumbar artery

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5
Q

Iliocostalis Origin

A

Iliac crest and sacrum

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5
Q

Iliocostalis Insertion

A

angles of the ribs

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5
Q

Iliocostalis Innervation

A

Dorsal primary rami of spinal nerves C4-S5

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6
Q

Latissimus dorsi Action

A

extends the arm and rotates the arm medially and adducts the arm

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7
Q

Latissimus dorsi Innervation

A

Thoracodorsal nerve from the posterior cord of the brachial plexus (C6, C7, C8)

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7
Q

Latissimus Dorsi Blood Supply

A

Thoracodorsal artery

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9
Q

Latissimus dorsi Insertion

A

Floor of the intertubercular sulcus of the humerus

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10
Q

Latissimus dorsi Origin

A

vertebral spines from T7 to the sacrum, posterior third of the iliac crest, lower 3-4 ribs, sometimes from the inferior angle of the scapula

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11
Q

Levator Scapulae Action

A

Elevates superior border of scapula; rotates scapula laterally thereby tilting the glenoid cavity downward

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11
Q

Levator Scapulae Blood Supply

A

Dorsal Scapular artery

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12
Q

Levator Scapulae Innervation

A

Dorsal Scapular nerve (c5); upper part of muscle receives branches of C3-C4

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14
Q

Levator Scapulae Origin

A

Transverse processes of C1-C4 vertebrae

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15
Q

Longissimus Action

A

Extends and laterally bends the trunk, neck and head

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16
Q

Longissimus Blood Supply

A

Supplied segmentally by deep cervical artery, posterior intercostal artery, subcostal aa, lumbar aa

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17
Q

Longissimus Innervation

A

Dorsal primary rami of spinal nerves C1-S2

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18
Q

Longissimus Insertion

A

Transverse processes at superior vertebral levels and mastoid process

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19
Q

Longissimus Origin

A

Transverse process at inferior vertebral levels

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19
Q

Muscles of the Suboccipital Triangle

A

Oblique Capitis Superior, Rectus Capitus Posterior Major, Oblique Capitis Inferior

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20
Q

Rhomboid Major Action

A

retracts, elevates and rotates the scapula which depresses the glenoid fossa

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21
Q

Rhomboid Major Blood Supply

A

Dorsal scapular artery

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22
Q

Rhomboid Major Insertion

A

Medial border of scapula between the scapular spine and inferior angle

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22
Q

Rhomboid Major Innervation

A

Dorsal Scapular nerve (C5)

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23
Q

Rhomboid Major Origin

A

Spinous processes of T2 to T5 thoracic vertebrae

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23
Q

Rhomboid Minor Action

A

retracts, elevates and rotates the scapula which depresses the glenoid fossa

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24
Q

Rhomboid Minor Blood Supply

A

Dorsal Scapular artery

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25
Q

Rhomboid Minor Innervation

A

Dorsal Scapular never (C5)

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26
Q

Rhomboid Minor Insertion

A

Medial border of scapula at the level of the spine of the scapula

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27
Q

Rhomboid Minor Origin

A

Spinous process of C7 and T1

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27
Q

Levator Scapulae Insertion

A

Superior angle and upper medial border of scapula

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28
Q

Semipinalis, multifidus, and rotatores

A

This group of muscles provides rotational, extension and lateral bending movements between adjacent vertebrae

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29
Q

Semispinalis Action

A

Extends the trunk and laterally bends the trunk, rotates the trunk to opposite side

30
Q

Semispinalis Blood Supply

A

supplied segmentally by deep cervical artery, posterior intercostal aa, subcostal aa and lumbar aa

31
Q

Semispinalis Innervation

A

Dorsal primary rami of spinal nerves C1-T12

32
Q

Semispinalis Insertion

A

Capitis: back of skull between nuchal line; cervicis and thoracis; spinous processes C3-C7, C8 and upper four thoracic vertebrae

33
Q

Semispinalis Origin

A

Transverse processes of C7-T12

34
Q

Serratus Posterior Inferior Action

A

Draw the lower four ribs downward and backward

35
Q

Serratus Posterior Inferior Blood Supply

A

Lowest posterior intercostal artey, subcoastal artery, first two lumbar arteries

37
Q

Serratus Posterior Inferior Innervation

A

Ventral primary rami of T9, T10, T11 and T12 spinal nerves

39
Q

Serratus Posterior Inferior Insertion

A

Onto the inferior border of the lower four ribs

41
Q

Serratus Posterior Inferior Origin

A

Spinous processes of T11-L3

42
Q

Serratus Posterior Superior Action

A

Elevate the second to fifth ribs

43
Q

Serratus Posterior Superior Blood Supply

A

Posterior intercostal arteriole arteries 1-4

44
Q

Serratus Posterior Superior Innervation

A

Ventral Primary rami of T1 to T4 spinal nerves

45
Q

Serratus Posterior Superior Insertion

A

Onto the upper borders of the second, third, fourth and fifth ribs

46
Q

Serratus Posterior Superior Origin

A

Spinous processes of C7 to T3 vertebrae

47
Q

Spinalis Action

A

Extends and laterally bends trunk and neck

49
Q

Spinalis Innervation

A

Dorsal primary rami of spinal nerves C2-L3

51
Q

Spinalis Insertion

A

spinous processes at superior vertebral levels

52
Q

Spinalis Origin

A

spinous processes at inferior vertebral levels

53
Q

Splenius capitis Action

A

Extends and laterally bends the neck and head, rotates the head to the same side

54
Q

Splenius capitis Blood Supply

A

Supplied segmentally by deep cervical artery, posterior intercostal artery

55
Q

Splenius capitis Innervation

A

Dorsal primary rami of the spinal nerves C2-C6

56
Q

Splenius capitis Insertion

A

Mastoid process and lateral end of the superior nuchal line

57
Q

Spinalis Blood Supply

A

Supplied segmentally by deep cervical artery, posterior intercostal artery, subcostal artery, lumbar artery

58
Q

Splenius capitis Origin

A

Ligamentum nuchae and spines of C7-T6

59
Q

Splenius cervicis Action

A

Extends and laterally bends the neck and head, rotates the head to the same side

60
Q

Splenius cervicis Blood Supply

A

Supplied segmentally by deep cervical artery, posterior intercostal artery

61
Q

Splenius cervicis Innervation

A

Dorsal primary rami of the spinal nerves C2-C6

63
Q

Splenius cervicis Insertion

A

Posterior Tubercles of transverse processes of C1-C3

64
Q

Splenius cervicis Origin

A

Ligamentum nuchae and spines of C7-T6

65
Q

Superficial Back Muscles

A

Trapezius, Latissimus Dorsi, Levator Scapulae, Rhomboids

66
Q

Trapezius Action

A

Assists SA in rotating the scapula during abduction of the humerus between 90-180 degrees.

67
Q

Trapezius Blood Supply

A

Transverse cervical artery

68
Q

Trapezius Innervation

A

Motor fibers from spinal part of the accessory nerve; sensory fibers from C3 - C4

69
Q

Trapezius Insertion

A

Lateral third of the clavicle; medial margin of acromion; spine of the scapula

70
Q

Trapezius Origin

A

Medial third of the superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of vertebrae C7-T12

71
Q

Rectus Capitis Posterior Major Origin

A

Spinous Process of axis

72
Q

Rectus Capitis Posterior Major Insertion

A

Lateral Part of the inferior nuchal line of the occipital bone

73
Q

Rectus Capitis Posterior Major Innervation

A

Suboccipital Nerve (dorsal ramus of C1)

74
Q

Rectus Capitis Posterior Major Action

A

Extends the head and laterally rotates it to the same side

75
Q

Rectus Capitis Posterior Minor Origin

A

Tubercle on the posterior arch of the atlas

76
Q

Rectus Capitis Posterior Minor Insertion

A

Medial Part of the Inferior Nuchal line of occipital bone

77
Q

Rectus Capitis Posterior Minor Innervation

A

Suboccipital Nerve (dorsal ramus of C1)

78
Q

Rectus Capitis Posterior Minor Action

A

Extends the head

79
Q

Obliquus Capitis Superior Origin

A

Upper surface of the transverse process of the atlas

80
Q

Obliquus Capitis Superior Insertion

A

between superior and inferior nuchal line of occiput

81
Q

Obliquus Capitis Superior Innervation

A

Suboccipital Nerve (Dorsal Ramus of C1)

82
Q

Obliquus Capitis Superior Action

A

Extends the head and bends it laterally

83
Q

Obliquus Capitis Inferior Origin

A

Apex of the spinous process of axis

84
Q

Obliquus Capitis Inferior Insertion

A

Inferior dorsal part of the transverse process of the atlas

85
Q

Obliquus Capitis Inferior Innervation

A

Suboccipital Nerve (Dorsal Ramus of C1)

86
Q

Obliquus Capitis Inferior Action

A

Rotates the atlas and thereby turns the face to the same side

Muscles (9 decks)

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