Cerebrovascular Anatomy Flashcards

1
Q

What is known as painless temporary loss of vision in one or both eyes?

A

Amaurosis fugax

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2
Q

What are the principal arteries supplying the head and neck?

A

Common carotid arteries

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3
Q

Where does the RCCA originate?

A

Brachiocephalic trunk

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4
Q

Where does the LCCA originate?

A

2nd branch off the aortic arch

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5
Q

At the level of what vertebrae does the CCA bifurcate into the internal and external carotid arteries?

A

C4 - same level as the superior border of the thyroid cartilage

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6
Q

Is the ECA or ICA larger?

A

ICA

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7
Q

Blood from the ICA is responsible for supplying what structures?

A

Brain and eyes

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8
Q

How would you tell apart the ICA and ECA?

A
  1. ICA is larger and has a bulb at the bifurcation from the CCA
  2. The ICA has NO branches off of it
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9
Q

What are the 3 main segments of the ICA?

A
  1. Cervical
  2. Petrous
  3. Intracranial
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10
Q

What artery is the first major branch of the intracranial segment of the ICA?

A

Ophthalmic artery

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11
Q

The ECA supplies blood flow to what structures?

A

Face and neck

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12
Q

What is the first branch off the ECA?

A

Superficial temporal artery

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13
Q

What are the anterior branches off the ECA?

A
  1. Superior thyroid
  2. Lingual
  3. Facial
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14
Q

What are the posterior branches off the ECA?

A
  1. Ascending pharyngeal
  2. Occipital
  3. Posterior auricular
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15
Q

ECA terminates into what two arteries?

A
  1. Superficial temporal
  2. Internal maxillary
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16
Q

Where do the vertebral arteries arise from?

A

Subclavian artery

17
Q

What artery do the two vertebral arteries join with?

A

Joins to form basilar artery

18
Q

What is the best known and most important collateral pathway?

A

Circle of Willis

19
Q

What veins are responsible for drainage of the head and neck?

A
  1. EJV
  2. IJV
  3. Vertebral veins
20
Q

What does the vertebral vein drain into?

A

Subclavian vein

21
Q

What vertebrae does the vertebral vein begin?

A

C6