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anatomy: back > back musc > Flashcards

back musc Flashcards

1
Q

3 musc layers (2 extrinsic or 1 intrinsic)

A

Extrinsic: superficial and intermediate layers

Intrinsic: deep layer

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2
Q

Superficial layer musc

A

Latissimus dorsi, trapezius, levator scapulae and rhomboids

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3
Q

Superficial layer connects ___ to spine

A

UE

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4
Q

Intermediate layer musc

A

Serratus posterior superior

Serratus posterior inferior

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5
Q

What innervates extrinsic musc

A

Ventral rami

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6
Q

Deep musc layers

A

Superficial

Intermediate

Deep

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7
Q

Deep superficial musc

A

Splenius capitis

Splenius cervisis

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8
Q

Deep intermediate musc

A

Iliocostalis

Longissimus

Spinalis

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9
Q

Tract 1: iliocostalis (deep intermediate) contains…

A

Lumborum

Thoracis

Cervicis

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10
Q

Tract 2: longissimus (deep intermediate) contains…

A

Thoracis

Cervicis

Capitis

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11
Q

Tract 3: spinalis (deep intermediate) contains…

A

Thoracis

Capitis

Cervicis (rarely seen)

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12
Q

Deep deep musc

A

Semispinalis

Multifidus

Rotatores

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13
Q

Semispinalis (deep deep) contains…

A

Thoracis

Cervicis

Capitis

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14
Q

Other deep musc not considered transversospinalis musc

A

Interspinalis and intertransversarii

Levator costarum

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15
Q

Suboccipital triangle is the area between ___ and ___ vertebrae

A

C0 and C2

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16
Q

Suboccipital triangle musc

A

Med border: rectus capitis posterior minor and major

Lat oblique border: obliquus capitis superior and inferior

17
Q

Contents of suboccipital triangle area between C0 and C1 (above obliquus capitis inf)

A

Vertebral artery

Suboccipital nerve

18
Q

Vertebral artery comes off of

A

Subclavian artery

19
Q

Contents of suboccipital triangle area between C1 and C2

A

Med branch of greater occipital nerve (travels with occipital artery)
… (occipital artery comes off from external carotid artery)

Lat branch innervates splenius, longissimus and Semispinalis capitis

20
Q

Suboccipital triangle straight musc

A

Rectus capitis posterior minor and major

21
Q

Suboccipital triangle oblique musc

A

Obliquus capitis superior and inferior

22
Q

Suboccipital triangle dorsal primary rami

A

Suboccipital (dorsal rami C1; motor)

Greater occipital (dorsal rami C2; sensory)

23
Q

Suboccipital triangle arteries

A

Vertebral

Occipital

24
Q

What layers?

A

Superficial and intermediate

25
Q

What layer?

A

Deep

26
Q

V musc actions

A

UL: rot and lat flex to same side

BL: ext

27
Q

A musc actions

A

UL: rot and lat flex to oppo side

BL: ext

28
Q

Parallel musc actions

A

UL: lat flex to same side

BL: ext

anatomy: back (7 decks)

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