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ANNNNNAAtomy > S,I,D,V > Flashcards

S,I,D,V Flashcards

1
Q

What is the function of articular facets on vertebrae?

A

muscular attachments, restriction of movement

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2
Q

What is the only vertebra that does not have a vertebral body?

A

C1

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3
Q

What does C1 articulate with?

A

occipital condyle

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4
Q

What ligament runs through the vertebral canal?

A

posterior longitudinal ligament

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5
Q

What joint is at the same level as the commisures of the mouth?

A

atlantoccipital joint

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6
Q

Is the spinal cord located in the sacrum?

A

No, it ends at L2

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7
Q

What indicates myelomeningocele?

A

the cord and meninges are part of the outpocketing

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8
Q

What can generally be said about the blood supply to the vertebral column?

A

It is regional.

thoracic vert: intercostal a, v
lumbar vert: lumbar segmental a, v

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9
Q

What are the major branches of a lumbar segmental artery?

A 
spinal branch
periosteal branch
equatorial branch
anterior vertebral canal branch
nutrient arteries

all anastomose!

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10
Q

What innervates the meninges, periosteum, bone and ligaments of the vertebral column?

A

recurrent meningeal n.

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11
Q

What arteries supply the spinal cord?

A 
spinal arteries
redicular branches (has anterior + posterior roots)
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12
Q

How many anterior and posterior spinal arteries are there?

A

one anterior spinal a.

two posterior spinal a.

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13
Q

What is the venous drainage of the spinal cord?

A

two veins for every one artery

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14
Q

Why is venous drainage and extradural fat important?

A

thermoregulation–neurons do not regenerate easily

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15
Q

What is the action of the trapezius muscle?

A

elevate, depress, retract scapula

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16
Q

What is the neurovascular supply to the trap?

A

accessory n. (CN XI)
C3, C4

transverse cervical vessels

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17
Q

Where is the subtrapzial plexus located and what is it?

A

runs deep to the trap m.

superficial branch of transverse cervical artery, accessory nerve (CN XI)

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18
Q

What is the action of the lat?

A

adducts, extends, and medially rotates humerus

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19
Q

What is the neurovascular supply to the lat?

A

thoracodorsal n.

thoracodorsal vessels
intercostal vessels

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20
Q

What is the action of the levator scapulae?

A

elevate scapula

21
Q

What is the neurovascular supply to levator scapulae?

A

C3 & C4
dorsal scapular n.

dorsal scapular vessels

22
Q

What is the action of the rhomboid group?

A

retract (adducts) and elevates scapula

23
Q

What is the neurovascular supply to rhomboid group?

A

dorsal scapular n.

dorsal scapular vessels.

24
Q

What vertebral levels does serratus posterior superior m. act on?

A

T2- T5

25
Q

What vertebral levels does serratus posterior inferior m. act on?

A

T9 - T12

26
Q

From lateral to medial, what are the three muscles of erector spinae?

A

Iliocostalis
Longissimus
Spinalis

27
Q

What is the action of splenius capitus m.?

A

bilaterally: draws head backward, extends neck
unilaterally: rotate head ipsilaterally

28
Q

What is the action of the spenius cervicis?

A

bilaterally: extend neck (does NOT draw head back)
unilaterally: rotate head ipsilaterally

29
Q

What is the innervation of the splenius capitus/cervicis?

A

posterior rami of the middle and lower cervical nn.

all deep muscles have same innervation

30
Q

What is the action of the semispinalis capitus?

A

bilaterally: extend vertebral column
unilaterally: rotate trunk contralaterally

31
Q

What are the borders of the occipital triangle?

A

laterally: olbliquus capitus sup.
medially/superiorly: rectus capitus major
inferiorly: obliquus capitus inf.

32
Q

What is the contents of the occipital triangle?

A

vertebral artery

C1 nerve

33
Q

What modality is C1?

A

ALL MOTOR

34
Q

Which muscle does the greater occipital n. (C2) pierce?

A

semispinalis capitus m.

35
Q

What happens if you injure C1?

A

can’t rotate your head very well bc obliquus capitus inf. will not work (main rotator of head) but you can still extend your head due to lots of other muscles

36
Q

What is the neurovascular supply to erector spinae m.?

A

dorsal rami of spinal nn.

lumber/intercostal vessels

37
Q

What is the action of multifidus m.?

A

laterally flexes and rotates spine

38
Q

What is the neurovascular supply to multifidus m.?

A

dorsal rami of spinal nn.

lumber/intercostal vessels

39
Q

What is the action of the rotatores m.?

A

unilaterally: rotate spine
bilaterally: extend vertebral column

40
Q

What is the neurovascular supply to rotatores m.?

A

dorsal rami of spinal nn.

lumber/intercostal vessels

41
Q

What are the minor deep muscles of the back?

A

interspinalis m.
intertranservarius m.
levatores costarum m.

42
Q

How are the superficial/intermediate muscles of the back innervated?

A

ventral rami

43
Q

How are the deep muscles of the back innervated?

A

dorsal rami

44
Q

Why is the midline a good place for an incision?

A

No cutaneous innervation crosses the midline

45
Q

What is the action of the serrates anterior m.?

A

protract scapula, holds to body wall

46
Q

What is the neurovascular supply of the serrates anterior m.?

A

long thoracic n.

lateral thoracic vessels

confusing–think loNg thoracic Nerve (both have n’s)

47
Q

What are the boundaries of the triangle of auscultation?

A

superior: trap m.
inferior: lat m.
lateral: rhomboid major m.
floor: 6th intercostal space

48
Q

What are the boundaries of the lumbar triangle?

A

medial: lat m.
lateral: external oblique m.
inferior: iliac crest
floor: internal oblique m.

ANNNNNAAtomy (13 decks)

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