Muscle Table

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Last updated 5:08 AM on 5/26/26
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98 Terms

1
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What innervates the Trapezius muscle?

Ventral rami

Spinal accessory nerve (CN XI)

2
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What is the action of the Trapezius?

Elevates, retracts, and rotates the scapula; lower fibers depress scapula

3
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<p>What is this muscle?</p>

What is this muscle?

Trapezius

4
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What nerve innervates the Latissimus dorsi?

Ventral rami

Thoracodorsal nerve

5
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What is the action of the Latissimus dorsi?

Extends, adducts, and medially rotates the humerus

6
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<p>What is this muscle?</p>

What is this muscle?

Latissimus dorsi

7
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What muscle group is the Trapezius in?

Superficial back

8
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What muscle group is the Latissimus dorsi in?

Superficial back

9
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What group is the Rhomboid major in?

Superficial back

10
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What innervates the Rhomboid major?

Ventral rami

Dorsal scapular nerve

11
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What is the action of the Rhomboid major?

Fixes scapula to thoracic wall and retracts and rotates it to depress glenoid fossa

12
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<p>What is this muscle?</p>

What is this muscle?

Rhomboid major

13
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What muscle group is the Rhomboid minor in?

Superficial back

14
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What innervates the Rhomboid minor?

Ventral rami

Dorsal scapular nerve

15
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What is the action of the Rhomboid minor?

Fixes the scapula to the thoracic wall and retracts and rotates it to depress glenoid fossa

16
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<p>What is this muscle? </p>

What is this muscle?

Rhomboid minor

17
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What muscle group is the Levator scapulae in?

Superficial back

18
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What innervates the Levator scapulae?

Ventral rami

Anterior rami of C3-C4 spinal nerves, dorsal scapular nerve

19
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What is the action of the Levator scapulae?

Elevates scapula medially, inferiorly rotates glenoid fossa

20
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<p>What is this muscle?</p>

What is this muscle?

Levator scapulae

21
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The Serratus posterior superior is in what muscle group?

Intermediate

22
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What is the innervation of the Serratus posterior superior?

Ventral rami

Anterior rami of the T2-T5 spinal nerves

23
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What is the action of the Serratus posterior superior?

Elevates ribs

24
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<p>What is this muscle?</p>

What is this muscle?

Serratus posterior superior

25
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What muscle group is the Serratus posterior inferior in?

Intermediate

26
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What innervates the Serratus posterior inferior?

Ventral rami

Anterior rami of T9-T12 spinal nerves

27
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What is the action of the Serratus posterior inferior?

Depresses ribs

28
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<p>What is this muscle?</p>

What is this muscle?

Serratus posterior inferior

29
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What muscle group is the Spleneius capitis in?

Superficial layer of the deep muscles

Spinotranversales

30
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What innervates the Spleneius capitis?

Dorsal rami

Posterior rami of the C2-C3 spinal nerves

31
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What is the action of the Splenius capitis?

Bilaterally: extends head

Unilaterally: laterally bends (flexes) and rotates face to same side

32
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<p>What is this muscle?</p>

What is this muscle?

Splenius capitis

33
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What muscle group is the Splenius cervicis (colli)?

Superficial layer of the deep muscles

Spinotraversales

34
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What innervates the Splenius cervicis?

Dorsal rami

Posterior rami of C4-C6 spinal nerves

35
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What is the action of the Splenius cervicis?

Bilaterally: Extends neck

Unilaterally: Laterally bends (flexes) and rotates neck toward same side

36
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<p>What is this muscle? </p>

What is this muscle?

Splenius cervicis

37
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What muscle group is the Iliocostalis in?

Intermediate group of the deep back muscles

Erector spinae

38
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What innervates the iliocostalis?

Dorsal rami

Posterior rami of spinal nerves

39
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What is the action of the iliocostalis?

Extend and laterally bend vertebral column and head

40
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<p>What is this muscle?</p>

What is this muscle?

Iliocostalis

41
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What muscle group is the Longissimus in?

Intermediate group of the deep back muscles

Erector spinae

42
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What innervates the Longissimus?

Dorsal rami

Posterior rami of spinal nerves

43
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What is the action of the Longissimus?

Extend and laterally bend vertebral column and head

44
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<p>What is this muscle?</p>

What is this muscle?

Longissimus

45
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What muscle group is the Spinalis in?

Intermediate group of the deep back muscles

46
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What innervates the Spinalis?

Dorsal rami

Posterior rami spinal nerves

47
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What is the action of the Spinalis?

Extend and laterally bend vertebral column and head

48
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<p>What is this muscle?</p>

What is this muscle?

Spinalis

49
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What Erector Spinae muscle is the most lateral?

Iliocostalis

50
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What Erector Spinae muscle is intermediate?

Longissimus

51
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What Erector Spinae muscle is the most medial?

Spinalis

52
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What is the common origin of the Erector Spinae muscles?

Thoricolumbar fascia

53
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What muscle group is the Semispinalis in?

Deep layer of the deep back muscles

Transversospinales

54
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What innervates the Semispinalis?

Dorsal rami

Posterior rami of the spinal nerves

55
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What are the main actions of the Semispinalis?

Extend head and neck and rotate them to opposite side

56
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<p>What is this muscle?</p>

What is this muscle?

Semispinalis

57
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What is within the Semispinalis?

Thoracis, cervicis, capitis

58
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What is the muscle group of the Multifidus?

Deep layer of the deep back muscles

Transversospinales

59
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What innervates the Multifidus?

Dorsal rami

Posterior rami of spinal nerves

60
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What is the action of the Multifidus?

Stabilize spine

61
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The Multifidus is a powerful what?

Rotator

62
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<p>What is this muscle?</p>

What is this muscle?

Multifidus

63
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What muscle group is the Rotatores in?

Deep layer of the deep back muscles

Transversospinales

64
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What innverates the Rotatores?

Dorsal rami

Posterior rami of spinal nerves

65
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What is the action of the Rotatores?

Stabilize, extend, and rotate spine

66
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The Rotatores is a powerful what?

Rotator

67
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What muscle group is the Interspinales in?

Deep layer of the deep muscles

68
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What innverates the Interspinales?

Dorsal rami

Posterior rami and spinal nerves

69
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<p>What is this muscle?</p>

What is this muscle?

Rotatores

70
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What is the action of the Interspinales?

Aid in extension of vertebral column

71
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<p>What is this muscle?</p>

What is this muscle?

Interspinalis

72
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What muscle group is the Intertranversarii in?

The deep layer of the deep back muscles

73
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What innvervates the intertransversarii?

Ventral rami

Medial: psoterior rami of spinal nerves

Lateral and anterior: anterior rami of spinal nerves

74
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What is the action of the Intertransversarii?

Assist in lateral flexion of vertebral column

75
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What muscle group is the Rectus capitis major in?

Suboccipital muscles

76
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<p>What is this muscle?</p>

What is this muscle?

Invertransversarii

77
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What innervates the Rectus capitis posterior major?

Suboccipital nerve

78
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What is the action of the Rectus capitis posterior major?

Extends and rotates head to same side

79
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<p>What is this muscle?</p>

What is this muscle?

Rectus capitis posterior major

80
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What muscle group is the Rectus capitis posterior minor in?

Suboccipital

81
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What innervates the Rectus capitis posterior minor?

Suboccipital nerve

82
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What is the action of the Rectus capitis posterior minor?

Extends head

83
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<p>What is this muscle?</p>

What is this muscle?

Rectus capitis posterior minor

84
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What muscle group is the Obliquus capitis superior in?

Suboccipital

85
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What innervates the Obliquus capitis superior?

Suboccipital nerve

86
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What is the action of the Obliquus capitis superior?

Extends and bends head laterally

87
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<p>What is this muscle?</p>

What is this muscle?

Obliquus capitis superior

88
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What muscle group is the Obliquus inferior capitis in?

Suboccipital

89
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What innervates the Obliquus inferior capitis?

Suboccipital nerve

90
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What is the action of the Obliquus inferior capitis?

Rotates atlas to turn face to same side

91
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<p>What is this muscle?</p>

What is this muscle?

Obliquus inferior capitis

92
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The Rectus capitis posterior major/minor are running which way?

Up-down

93
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The Obliquus capitis superior/inferior are running which way?

diagonal

94
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What muscles are within the illiocostalis?

Lumborum, thoracis, cervicis

95
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What muscles are within the Longissimus?

Thoracis, cervicis, capitis

96
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What muscles are within the Spinalis?

Thoracis (independent), Cervicis

97
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“I Love Spaghetti” can help remember what intermediate group of the deep back muscles?

I= Iliocostalis

Love = Longissimus

Spaghetti = Spinalis

98
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“Says Mama Ragu” can help remember what deep layer of deep back muscles?

Says = Semispinalis

Mama = Multifidus

Ragu = Rotatores