Cerebrovascular Anatomy Flashcards

1
Q

In the majority of people where does the recurrent artery of Huebner originate?

A
Junction of the ACA and Acomm (62.3%)
Proximal A2 (23.3%)
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2
Q

“Some Anatomists Like Freaking Out Poor Medical Students.” This is a mnemonic for the branches of what major artery? Name the branches.

A

External Carotid Artery

S = Superior thyroid
A = Ascending pharyngeal
L = Lingual
F = Facial
O = Occipital
P = Posterior Auricular
M = Maxillary
S = Superficial Temporal
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3
Q

Describe the location of the artery:

A1

A

From branch off ICA to Acomm origin

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4
Q

Describe the location of the artery:

A2

A

From branch of Acomm to origin of callosomarginal

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5
Q

Describe the location of the artery:

A3

A

From branch of callosomarginal to superior surface of corpus callosum (~3cm posterior from genu)

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6
Q

Describe the location of the artery:

A4

A

Pericallosal portions

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7
Q

Describe the location of the artery:

A5

A

Terminal branches

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8
Q

Describe the location of the artery:

M1

A

MCA from origin to bifurcation (horizontal segment on AP angiogram)
*Bifurcation seen in ~ 50%

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9
Q

Describe the location of the artery:

M2

A

From MCA bifurcation to Sylvian fissure

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10
Q

Describe the location of the artery:

M3 and M4

A

Distal branches of MCA past the Sylvian fissure

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11
Q

Describe the location of the artery:

M5

A

Terminal branches of MCA

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12
Q

Describe the location of the artery:

P1

A

From origin off basilar to origin of Pcomm

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13
Q

Describe the location of the artery:

P2

A

From origin of Pcomm to branching of inferior temporal arteries

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14
Q

Describe the location of the artery:

P3

A

From origin of inferior temporal arteries to branching of terminal branches

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15
Q

Describe the location of the artery:

P4

A

Portion after branching of parieto-occipital and calcarine arteries; includes the cortical branches of PCA

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16
Q

For the most part what is the only cause of hypertrophy of the ascending pharyngeal artery? Why?

A

Tumors of jugular foramen (since they’re supplied by the pharyngeal branch of the ascending pharyngeal artery)

17
Q

What artery supplies cranial nerves IX, X, and XI? What other artery is it a branch of?

A

Neuromeningeal artery which is a branch of ascending pharyngeal artery (2nd branch off ECA)

18
Q

What artery is commonly damaged in an epidural hematoma? Where does this artery branch from?

A

Middle meningeal artery

MMA branches off the maxillary artery which is a branch of the ECA

19
Q

Which branch of the ECA anastomoses with the ophthalmic artery?

A

Facial artery

20
Q

Relative to the ECA, where does the ICA lay?

A

Posterior and medial

21
Q

Name the 7 portions of the ICA

A
C1: Cervical
C2: Petrous
C3: Lacerum
C4: Cavernous
C5: Clinoid
C6: Ophthalmic
C7: Communicating
22
Q

Describe the location of the artery:

Cervical portion of ICA (C1)

A

From branch off common carotid to entrance into carotid canal at petrous bone

23
Q

Describe the location of the artery:

Petrous portion of ICA (C2)

A

From entrance into petrous bone (carotid canal) to posterior edge of foramen lacerum

24
Q

Describe the location of the artery:

Lacerum portion of ICA (C3)

A

From edge of foramen lacerum to point of piercing dura and passing the petrolingual ligament

25
Q

Describe the location of the artery:

Cavernous portion of ICA (C4)

A

From cavernous sinus to proximal dural ring

26
Q

Describe the location of the artery:

Clinoid portion of ICA (C5)

A

From proximal to distal dural ring

27
Q

Describe the location of the artery:

Ophthalmic portion of ICA (C6)

A

From distal dural ring to just proximal to Pcomm

28
Q

Describe the location of the artery:

Communicating portion of ICA (C7)

A

Proximal to Pcomm origin to point where it bifurcates into ACA and MCA