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Anatomy > Lab (O,I,I, and A of Muscles) > Flashcards

Lab (O,I,I, and A of Muscles) Flashcards

0
Q

Insertion of trapezius

A

Acromion and spine of scapula and lateral third of clavicle

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1
Q

Origin of trapezius

A

Nuchal line, occipital protuberances of C7-C12

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2
Q

Nerves of trapezius

A

Accessory nerve and C3 and C4

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3
Q

Action of trapezius

A

Elevates, depresses, and retracts scapula

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4
Q

Action of latissimus dorsi

A

Extends, adducts, and medially rotate humerus

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5
Q

Nerves of latissimus dorsi

A

C6, C7, C8

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6
Q

Insertion of latissimus dorsi

A

Bicipital groove of humerus

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7
Q

Origin of latissimus dorsi

A

Last 6 thoracic vertebrae, iliac crest, thoracolumbar fascia, inferior 3 or 4 ribs

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8
Q

Nerves of levator scapula

A

C3 and C4 and C5

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9
Q

Actions of levator scapulae

A

Elevates scapula and inferiorilly tilts glenoid cavity to rotate scapula

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10
Q

Insertion of levator scapulae

A

Medial border superior to spine of scapula

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11
Q

Origin of levator scapulae

A

C1-C4

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12
Q

Insertion of Rhomboid major

A

Medial border of scapula from spine to inferior angle

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13
Q

Origin of rhomboid major

A

T2-T5

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14
Q

Insertion of rhomboid minor

A

Smooth triangular area at medial border of scapula

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15
Q

Origin of rhomboid minor

A

C7 and T1 and nuchal ligament

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16
Q

Nerves of rhomboid minor and major

A

C4 and C5

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18
Q

Action of rhomboids

A

Retract scapula to depress glenoid cavity

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19
Q

Origin of Splenius Cervicis

A

Nuchal ligament and C7-T6

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20
Q

Insertion of splenius cervicis

A

C1-C3/4

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21
Q

Action of splenius cervicis

A

laterally flex neck and rotate head to side of active muscles

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22
Q

innervation of splenius cervicis

A

posterior rami of spinal nerves

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23
Q

origin of splenius capitis

A

Nuchal ligament and C7-T6

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24
Q

insertion of splenius capitis

A

Mastoid process of the temporal bone and lateral 3rd of superior nuchal line of the occipital bone

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25
Q

innervation of splenius capitis

A

Posterior rami of spinal nerves

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26
Q

action of splenius capitis

A

laterally flex neck and rotate head to side of active muscles

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27
Q

origin of serratus posterior superior

A

nuchal ligament and C7-T3

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28
Q

insertion of serratus posterior superior

A

superior borders of 2nd-4th ribs

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29
Q

innervation of serratus posterior superior

A

intercostal nerves (2nd-5th)

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30
Q

action of serratus posterior superior

A

proprioception

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31
Q

origin of serratus posterior inferior

A

T11-L2

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32
Q

insertion of serratus posterior inferior

A

inferior borders of 8th-12th ribs

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33
Q

innervation of serratus posterior inferior

A

anterior rami to T9-T12 thoracic spinal nerves

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34
Q

action of serratus posterior inferior

A

propioception

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35
Q

origin of iliocostalis

A

posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligament. sacral and inferior lumbar spinous processes, and supraspinous ligament

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36
Q

insertion of iliocostalis

A

fibers run superiorly to angles of lower ribs and cervical transverse processes

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37
Q

innervation of iliocostalis

A

posterior rami of spinal nerves

38
Q

action of iliocostalis

A

extend vertebral column and head, ( if back flexed) control movement via ECC contraction

39
Q

Origin of longissimus

A

posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligament. sacral and inferior lumbar spinous processes, and supraspinous ligament

40
Q

insertion of longissimus

A

superiorly to ribs btwn tubercles, transverse processes in T/C regions, mastoid process of temporal bone

41
Q

innervation of longissimus

A

posterior rami of spinal nerves

42
Q

action of longissimus

A

extend vertebral column and head-Capitis (altanto-occipital joint). (if back flexed) control movement via ECC contraction

43
Q

roots of longissimus

A

thoracis, cervicis, capitis

44
Q

roots of ilicostalis

A

lumborum, thoracis, cervicis

45
Q

origin of spinalis

A

posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligament. sacral and inferior lumbar spinous processes, and supraspinous ligament

46
Q

insertion of spinalis

A

superiorly to spinous processes in the upper thoracic region and to cranium

47
Q

innervation of spinalis

A

posterior rami of spinal nerves

48
Q

action of spinalis

A

extend vetebral column and head, (if back flexed) control movement via ECC contraction

49
Q

roots of spinalis

A

cervicis and capitis

50
Q

origin of semispinalis

A

C4-T12

51
Q

insertion of semispinalis

A

supermedially to the occipital bone and spinous processes in thoracic and cervical regions

52
Q

innervation of semispinalis

A

porterior rami of spinal nerves

53
Q

action of semispinalis

A

extends head, thoracic and cervical regions and rotates them contalaterally

54
Q

roots of semispinalis

A

thoracis, cervicis, capitis

55
Q

origin of multifidus

A

posterior sacrum, PSIS, aponeurosis of erector spinae, sacroiliac ligament, mammilary processes of lumbar vertebrae, T1-T3 and C4-C7

56
Q

insertion of multifidus

A

(thickest in lumbar) fibers pass obliquely superomedial to the entire length of spinous processes, located 2-4 segments superior to proximal attachment

57
Q

innervation of multifidus

A

posterior rami of spinal nerves

58
Q

action of multifidus

A

stabilizes vertebrae during local movements of vertebral column

59
Q

origin of rotatores

A

thoracic region

60
Q

insertion of rotatores

A

junction of lamina and transverse process of vertebrae immed.(brevis) or 2 segments (longus) superior to vertebrae of attachment

61
Q

innervation of rotatores

A

posterior rami of spinal nerves

62
Q

action of rotatores

A

stabilizes vertebrae

63
Q

roots of rotatores

A

brevis, longus

64
Q

origin of intertransversarii

A

transverse processes of cervical and lumbar vertebrae

65
Q

insertion of intertransversarii

A

transverse processes of adjacent vertebare

66
Q

innervation of intertransversarii

A

posterior rami of spinal nerves

67
Q

action of intertransversarii

A

bilaterally; stabilize the vetebral column

68
Q

origin of levatores costarum

A

transverse process of C7 and T1-T11

69
Q

insertion of levatores costarum

A

pass inferolaterally and insert on rib btwn tubercle and angle

70
Q

innervation of levatores costarum

A

posterior rami of C8-T11

71
Q

action of levatores costarum

A

elevate ribs

72
Q

Origin of deltoid (distal)

A

Lateral 1/3 of clavicle, acromion, and spine of scapula

73
Q

Insertion of deltoid (proximal)

A

Deltoid tuberosity of humerus

74
Q

Innervation of deltoid

A

Axillary nerve (c5, c6)

75
Q

Action of deltoid

A

Ascending: flex and medially rotate
Middle: abducts in posterior
Laterally rotates and extends arm

76
Q

Origin of supraspinatus

A

Supraspinous process of scapula

77
Q

Insertion of supraspinatus

A

Superior facet of greater tubercle

78
Q

Innervation of supraspinatus

A

Suprascapular nerve (c4, c5, c6)

79
Q

Action of supraspinatus

A

Abduction of arm

80
Q

Origin of Infraspinatus

A

Infraspinous process of scapula

81
Q

Insertion of infraspinatous

A

Middle facet of greater tubercle

82
Q

Innervations of infraapinatus

A

Suprascapular nerve (c5, c6)

83
Q

Action of infraspinatus

A

Laterally rotate arm

84
Q

Origin of teres major

A

Posterior surface of inferior angle of scapula

85
Q

Insertion of teres major

A

Medial lip of inter tubercle sulcus of humerus

86
Q

Innervations of teres major

A

Subscapular nerve (c5,c6)

87
Q

Action of teres major

A

Laterally rotate arm

88
Q

Origin of serratus anterior

A

External surface of lateral parts of 1st-8th ribs

89
Q

Insertion of serratus anterior

A

Anterior surface of medial border of scapula

90
Q

Innervation of serratus anterior

A

Long thoracic nerve (c5, c6, c7)

91
Q

Action of serratus anterior

A

Protracts scapula and holds it against thoracic wall; rotates scap

Anatomy (1 decks)

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