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Anatomy- Cadaver Lab > Back and Neck Muscles > Flashcards

Back and Neck Muscles Flashcards

1
Q

Trapezius origin

A

external occipital protuberance of occipital bone, ligamentum nuchae (C1-C6), spinous
processes of C7 through T12

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2
Q

Trapezius insertion

A

spine of scapula, acromion process of scapula, lateral 1/3 of clavicle

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3
Q

Trapezius actions

A

upper fibers: upward rotation of scapula, elevation of scapula
middle fibers: retraction of scapula
lower fibers: upward rotation of scapula, depression of scapula

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4
Q

Trapezius innervation

A

accessory nerve (Cranial Nerve XI)

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5
Q

Trapezius blood supply

A

transverse cervical a.

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6
Q

Latissimus dorsi origin

A

spinous processes of T7 through L5, posterior iliac crest of ilium

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7
Q

Latissimus dorsi insertion

A

crest of lesser tubercle of humerus, floor of intertubercular groove of humerus

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8
Q

Latissimus dorsi actions

A

extension of humerus, medial rotation of humerus, adduction of humerus

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9
Q

Latissimus dorsi innervation

A

thoracodorsal nerve

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10
Q

Latissimus dorsi blood supply

A

thoracodorsal a.

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11
Q

Levator scapulae origin

A

transverse processes of Cl through C4

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12
Q

Levator scapulae insertion

A

superior angle of scapula

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13
Q

Levator scapulae actions

A

elevation of scapula, downward rotation of scapula

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14
Q

Levator scapulae innervation

A

dorsal scapular nerve

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15
Q

Levator scapulae blood supply

A

dorsal scapular a.

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16
Q

Rhomboid major origin

A

spinous processes of T2 through T5

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17
Q

Rhomboid major insertion

A

medial (vertebral) border of scapula inferior to base of the spine

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18
Q

Rhomboid major actions

A

retraction of scapula, elevation of scapula, downward rotation of scapula

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19
Q

Rhomboid major innervation

A

dorsal scapular nerve

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20
Q

Rhomboid major blood supply

A

dorsal scapular a.

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21
Q

Rhomboid minor origin

A

spinous processes of C7 and Tl, lower ligamentum nuchae

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22
Q

Rhomboid minor insertion

A

medial (vertebral) border at the base of the spine of the scapula

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23
Q

Rhomboid minor actions

A

retraction of scapula, elevation of scapula, downward rotation of scapula

24
Q

Rhomboid minor innervation

A

dorsal scapular nerve

25
Q

Rhomboid minor blood supply

A

dorsal scapular a.

26
Q

Splenius capitis origin

A

lower half of ligamentum nuchae, spinous processes of C7-T4 vertebrae

27
Q

Splenius capitis insertion

A

mastoid process of temporal bone, occipital bone below lateral nuchal line

28
Q

Splenius capitis actions

A

extend head and neck, laterally flex head and neck; rotate head to same side

29
Q

Splenius capitis innervation

A

dorsal rami of middle cervical spinal nerves

30
Q

Splenius capitis blood supply

A

Occipital a.

31
Q

Splenius cervicis origin

A

spinous processes of T3-T6 vertebrae

32
Q

Splenius cervicis insertion

A

transverse processes of C1-C3 vertebrae (anterior to Levator Scapulae)

33
Q

Splenius cervicis actions

A

extend head and neck, laterally flex head and neck; rotate head to same side

34
Q

Splenius cervicis innervation

A

dorsal rami of spinal nerves

35
Q

Spenius cervicis blood supply

A

Occipital a.

36
Q

Semispinalis capitis origin

A

transverse processes of C7-T12 vertebrae

37
Q

Semispinalis capitis insertion

A

between superior and inferior nuchal lines of occipital bone

38
Q

Semispinalis capitis actions

A

extend head and neck, rotate head and vertebral column contralaterally

39
Q

Semispinalis capitis innervation

A

dorsal rami of spinal nerves

40
Q

Semispinalis capitis blood supply

A

occipital artery

41
Q

Erector Spinae Group origin

A

transverse and spinous processes of T10-L5, sacrum, iliac crest of ilium

42
Q

Erector Spinae Group insertion

A

spinous processes of thoracic vertebrae, transverse processes of cervical and thoracic vertebrae, ribs, occipital bone, sometimes temporal bone

43
Q

Erector Spinae Group Actions

A

extend vertebral column, lateral flexion of vertebral column, head and neck

44
Q

Erector Spinae Group Innervation

A

dorsal rami of spinal nerves C1-S5

45
Q

Erector Spinae Group Blood supply

A

deep cervical artery, posterior intercostal arteries, subcostal arteries, lumbar artery

46
Q

Serratus Posterior Superior origin

A

spines of C7 -T3, ligamentum nuchae

47
Q

Serratus Posterior Superior insertion

A

Ribs 1-4

48
Q

Serratus Posterior Superior Actions

A

Draws upper ribs up and back

49
Q

Serratus Posterior Superior Innervation

A

ventral rami of T1-T4 nerves (intercostal nerves)

50
Q

Serratus Posterior Superior Blood supply

A

posterior intercostal arteries 1-4

51
Q

Serratus Posterior Inferior origin

A

spinous processes of T11-L2 (via thoracolumbar fascia)

52
Q

Serratus Posterior Inferior
Insertion

A

inferior border of ribs 8-12

53
Q

Serratus Posterior Inferior
Actions

A

draws lower ribs down and back

54
Q

Serratus Posterior Inferior
Innervation

A

ventral rami of T9-T12 (intercostal nerves)

54
Q

Serratus Posterior Inferior
Blood supply

A

lowest posterior intercostal artery, subcostal artery, first two lumbar arteries

Anatomy- Cadaver Lab (3 decks)

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