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Survey Of Vascular Tech > Cerebrovascular Anatomy > Flashcards

Cerebrovascular Anatomy Flashcards

1
Q

What does the RT CCA arise from?

A

innominate artery

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2
Q

What does teh LT CCA arise from?

A

2nd branch of aortic arch

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3
Q

What is the dilatation proximal to the bifurcation of the CCA?

A

carotid bulb

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4
Q

What does the CCA bifurcate into?

A

ICA & ECA

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5
Q

What is the 1st branch of the ICA?

A

ophthalmic artery

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6
Q

Where does the ICA terminate?

A

circle of willis

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7
Q

What feeds the middle cerebral artery?

A

ICA

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8
Q

What type of flow does the ICA have?

A

low resistant

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9
Q

How many branches does the ECA have?

A

8

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10
Q

What are the branches of the ECA?

A
  1. superior thyroid
  2. ascending pharyngeal
  3. lingual
  4. facial
  5. occipital
  6. posterior auricular
  7. superficial temporal
  8. maxillary
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11
Q

What does the ECA supply?

A

face, neck, scalp

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12
Q

What type of flow does the ECA have?

A

high resistant

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13
Q

What does the vertebral a arise from?

A

subclavian

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14
Q

Where does the vertebral artery travel?

A

superiorly along cervical spine entering the foramen magnum

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15
Q

What does the vertebral artery unite to form?

A

basilar artery

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16
Q

What is the circle of willis?

A

intracranial communication of vessels that connect anterior and posterior circulation systems of the brain

17
Q

What does the circle of willis provide?

A

collateral pathways to maintain flow in presence of stenosis or occlusion

18
Q

What are the arteries in the circle of willis?

A
  1. anterior cerebral
  2. anterior communicating
  3. middle cerebral
  4. posterior communicating
  5. posterior cerebral
  6. internal carotid
  7. basilar
19
Q

What are the differences of the ICA and ECA?

A

ICA:
-larger
-no branches
-posterior/lateral
-low resistant
ECA:
-smaller
-8 branches
-anterior/medial
-high resistant
-temporal tap

20
Q

What is the pt position for carotid exam?

A

supine

21
Q

What is the carotid exam protcol?

A
  1. trans cca
  2. trans bulb
  3. trans bifur
  4. long cca- 2d, color, doppler
  5. long bulb- 2d, color
  6. long ica- 2d, color, doppler (prox, mid, dist)
  7. long eca- 2d, color, doppler
  8. long vert- 2d, color, doppler
  9. subclavian- 2d, color, doppler
22
Q

What is the name of flow reversal in the carotid bulb?

A

Eddy current

23
Q

What may hinder color filling in a carotid exam?

A

dense, calcified plaque

24
Q

What type of flow do the vertebrals have?

A

low resistant

25
Q

What type of flow do the subclavians have?

A

high resistant

Survey Of Vascular Tech (8 decks)

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