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Anatomy > Back Muscles > Flashcards

Back Muscles Flashcards

1
Q

Trapezius Origin

A

Medial 1/3 nuchal line and spinous process of C7-T12

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2
Q

Trapezius Insertion

A

Lateral 1/3 of clavicle, acromion, scapular spine

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3
Q

Trapezius Arterial supply

A

Transverse cervical A.

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4
Q

Trapezius Innervation

A

Spinal accessory nerve & C3/C4 nerves

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5
Q

Trapezius Function

A

Elevates, depresses & retracts scapula. Fixes scapula to thoracic wall. Unilaterally flexes neck ipsilaterally.

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6
Q

Latissimus Dorsi Origin

A

Spinous process of T7-T12, inferior angle of scapula.

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7
Q

Latissimus Dorsi insertion

A

Floor of intertubercular groove of humerus

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8
Q

Latissimus Dorsi Innveration

A

C6-C8 spinal nerves (thoracodorsal nerve)

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9
Q

Latissimus Dorsi Arterial supply

A

Thoracodorsal A.

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10
Q

Latissimus Dorsi Function

A

Extends, abducts and medially rotates shoulder. Brings body to arms when extended superiorly

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11
Q

Levator Scapulae Origin

A

C1-C4 transverse processes.

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12
Q

Levator scapulae attachment

A

Superior angle of scapula

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13
Q

Levator Scapulae Innervation

A

C3-C5 spinal nerves (C5 dorsal scapular nerve)

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14
Q

Levator Scapulae arterial supply

A

Dorsal Scapular A.

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15
Q

Levator Scapulae Function

A

Elevates scapula, laterally flexes neck ipsilaterally.

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16
Q

Rhomboid Major Origin

A

Spinous process of T2-T5.

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17
Q

Rhomboid Major insertion

A

Medial border of scapula below scapula spine

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18
Q

Rhomboid major innervation

A

Dorsal scapular nerve (C5)

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19
Q

Rhomboid major arterial supply

A

Dorsal Scapular A.

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20
Q

Rhomboid major Function

A

Retracts scapula & steadies scapula to thoracic wall.

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21
Q

Rhomboid minor Origin

A

Nuchal ligament & C7-T1 spinous processes

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22
Q

Rhomboid minor Insertion

A

Medial border of scapulae at scapula spine

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23
Q

Rhomboid Minor Innervation

A

Dorsal scapular nerve (C5)

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24
Q

Rhomboid minor Arterial supply

A

Dorsal scapular A.

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25
Q

Rhomboid Minor Functions

A

Elevates & steadies the scapula & ipsilaterally inclines neck.

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26
Q

Serratus Posterior superior Origin

A

Spinous processes of C7-T3

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27
Q

Serratus Posterior superior Insertion

A

Ribs 2-4

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28
Q

Serratus posterior superior innervation

A

Anterior rami of T2-T5

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29
Q

Serratus posterior superior Arterial supply

A

Inter coastal A.

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30
Q

Serratus posterior superior function

A

Proprioception

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31
Q

Serratus posterior inferior Origin

A

spinous processes of T11-L2

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32
Q

Serratus posterior inferior insertion

A

Ribs 8-12

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33
Q

Serratus posterior inferior innervation

A

Anterior rami of T9-T12

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34
Q

Serratus posterior inferior arterial supply

A

Intercostal, subcoastal and lumbar Arteries

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35
Q

Serratus posterior inferior Function

A

Proprioception

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36
Q

Spinotransversales muscle names

A

Splenius cervicis & Splenius capitis

37
Q

Splenius cervicis origin

A

Spinous processes of T3-T6

38
Q

Splenius cervicis insertion

A

Transverse processes of C1-C3

39
Q

Splenius Capitis Origin

A

Spinous processes of C7-T4

40
Q

Splenius capitis insertion

A

Mastoid process and superior nuchal line

41
Q

Spinotransversales innervation

A

Posterior rami of spinal nerves

42
Q

Spinotransversales Arterial supply

A

Occipital & transverse cervical artery

43
Q

Spinotransversales functions

A

Bilaterally extends neck, ipsilaterally flexes and rotates neck

44
Q

Erector spinae muscle names

A

Illiocostalis, Longissimus, Spinallis

45
Q

Illicostalis origin

A

Broad tendon of iliac crest & lumbar spinous processes

46
Q

Illiocostalis Insertion

A

Lower rib angles and cervical transverse processes

47
Q

Illiocostalis innervation

A

Posterior rami of spinal nerves.

48
Q

Illiocostalis Artery supply

A

Deep cervical, intercostal, subcostal and lumbar A.

49
Q

Illiocostals Function

A

Bilaterally extends spine, ipsilaterally laterally flexes spine.

50
Q

Longissimus origin

A

Broad tendon of illiac crest and lumbar spinous processes

51
Q

Longissimus Insertion

A

Thoracic and cervical transverse processes (thoarcis and cervicis) and mastoid processes (capitis)

52
Q

Longissimus innervation

A

Posterior rami of spinal nerves

53
Q

Longissimus Arterial supply

A

Deep cervical, intercostal, subcostal and lumbar A.

54
Q

Longissimus Function

A

Bilaterally extends spine & head, ipsilaterally laterally flexes spine & head

55
Q

Spinallis Origin

A

Broad tendon of illiac crest.

56
Q

Spinallis Insertion

A

Spinous processes in thoracic and cervical vertebrae

57
Q

Spinallis innervation

A

Posterior rami of spinal nerves

58
Q

Spinallis Arterial supply

A

Deep cervical, intercoastal, subcostal and lumbar A.

59
Q

Spinallis Function

A

Bilaterally extends spine, ipsilaterally laterally flexes spine.

60
Q

Transversospinales muscle names

A

Semispinalis, multifidus, Rotatores longus & Brevis

61
Q

Semispinalis Origin

A

Transverse processes of C4-T12.

62
Q

Semispinalis insertion

A

occipital bone, spinous processes of cervical and thoracic vertebrae

63
Q

Semispinalis Arterial supply

A

Deep cervical, intercoastal, subcostal & lumbar A.

64
Q

Semispinalis Function

A

Bilaterally extends head & spine, ipsilaterally flexes spine and contralaterally rotates spine

65
Q

Multifidus Origin

A

Sacrum, ilium, transverse processes of T1-T3 & L2-L5. Articular processes of C4-C7

66
Q

Multifidus insertion

A

Spinous processes of superior vertebrae.

67
Q

Multifidus Innervation

A

Posterior rami of spinal nerves

68
Q

Multifidus Arterial supply

A

Deep cervical, intercostal, subcostal and lumber A.

69
Q

Multifidus Function

A

Bilaterally extends spine, Ipsilaterally flexes spine.

70
Q

Rotatores origin

A

Transverse process of T1-T12

71
Q

Rotatores insertion

A

Spinous process of superior vertebrae

72
Q

Rotatores innervation

A

Posterior rami of spinal nerves

73
Q

Rotatores arterial supply

A

Deep cervical, intercostal, subcostal, lumbar A.

74
Q

Rotatores function

A

Bilaterally extends spine, contralateral rotation of spine. Proprioception.

75
Q

Interspinales origin & insertion

A

Moves through C1-L5.

Origin = spinous processes of superior vertebrae. Insertion = spinous processes of inferior vertebrae.

76
Q

Interspinales innervation

A

Posterior rami of spinal nerves

77
Q

Interspinales Arterial supply

A

Deep cervical, intercostal, subcostal & lumbar A.

78
Q

Interspinales Functions

A

Extension of spine

79
Q

Intertransversarii Orign & insertion

A

Moves through C2-L5
Origin: transverse process of superior vertebrae.
Insertion: transverse process of inferior vertebrae.

80
Q

Intertransversarii Innervation

A

Anterior rami of cervical spinal nerves (cervicis)

Posterior rami of thoracic and lumbar spinal nerves (thoracis & lumborum).

81
Q

Intertransversarii arterial supply

A

Deep cervical, intercostal, subcostal & lumbar A.

82
Q

Intertransversarii Function

A

Bilaterally stabilize spine, unilaterally laterally flexes the spine.

83
Q

Levatores Costarum origin

A

Transverse processes of C7-T11.

84
Q

Levatores costarum insertion

A

Subjacent ribs (breves) or rib 2 vertebrae below origin (longus)

85
Q

Levatores costarum Arterial supply

A

Deep cervical, intercostal, subcostal & lumbar A.

86
Q

Levatores costarum Function

A

Bilaterally elevates ribs. Ipsilaterally laterally flexes thoracic spine and contralaterally rotates it.

87
Q

Suboccipital Triangle (muscles)

A

Rectus capitis posterior major: Medial border
Obliquus Capitis superior: Lateral border
Obliquus Capitis inferior: Inferior border

Contains the Vertebral & Suboccipital nerves.

88
Q

Triangle of Auscultation

A

Trapezius: Medial Border
Medial border of scapulae: Lateral Border
Illiac Crest: Inferior Border

89
Q

Lumbar Triangle

A

Latissimus Dorsi: Medial Border
External Oblique: Lateral Border
Illiac Crest: Inferior Border

Anatomy (17 decks)

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