Cerebrovascular Anatomy Flashcards
In the majority of people where does the recurrent artery of Huebner originate?
Junction of the ACA and Acomm (62.3%) Proximal A2 (23.3%)
“Some Anatomists Like Freaking Out Poor Medical Students.” This is a mnemonic for the branches of what major artery? Name the branches.
External Carotid Artery
S = Superior thyroid A = Ascending pharyngeal L = Lingual F = Facial O = Occipital P = Posterior Auricular M = Maxillary S = Superficial Temporal
Describe the location of the artery:
A1
From branch off ICA to Acomm origin
Describe the location of the artery:
A2
From branch of Acomm to origin of callosomarginal
Describe the location of the artery:
A3
From branch of callosomarginal to superior surface of corpus callosum (~3cm posterior from genu)
Describe the location of the artery:
A4
Pericallosal portions
Describe the location of the artery:
A5
Terminal branches
Describe the location of the artery:
M1
MCA from origin to bifurcation (horizontal segment on AP angiogram)
*Bifurcation seen in ~ 50%
Describe the location of the artery:
M2
From MCA bifurcation to Sylvian fissure
Describe the location of the artery:
M3 and M4
Distal branches of MCA past the Sylvian fissure
Describe the location of the artery:
M5
Terminal branches of MCA
Describe the location of the artery:
P1
From origin off basilar to origin of Pcomm
Describe the location of the artery:
P2
From origin of Pcomm to branching of inferior temporal arteries
Describe the location of the artery:
P3
From origin of inferior temporal arteries to branching of terminal branches
Describe the location of the artery:
P4
Portion after branching of parieto-occipital and calcarine arteries; includes the cortical branches of PCA
For the most part what is the only cause of hypertrophy of the ascending pharyngeal artery? Why?
Tumors of jugular foramen (since they’re supplied by the pharyngeal branch of the ascending pharyngeal artery)
What artery supplies cranial nerves IX, X, and XI? What other artery is it a branch of?
Neuromeningeal artery which is a branch of ascending pharyngeal artery (2nd branch off ECA)
What artery is commonly damaged in an epidural hematoma? Where does this artery branch from?
Middle meningeal artery
MMA branches off the maxillary artery which is a branch of the ECA
Which branch of the ECA anastomoses with the ophthalmic artery?
Facial artery
Relative to the ECA, where does the ICA lay?
Posterior and medial
Name the 7 portions of the ICA
C1: Cervical C2: Petrous C3: Lacerum C4: Cavernous C5: Clinoid C6: Ophthalmic C7: Communicating
Describe the location of the artery:
Cervical portion of ICA (C1)
From branch off common carotid to entrance into carotid canal at petrous bone
Describe the location of the artery:
Petrous portion of ICA (C2)
From entrance into petrous bone (carotid canal) to posterior edge of foramen lacerum
Describe the location of the artery:
Lacerum portion of ICA (C3)
From edge of foramen lacerum to point of piercing dura and passing the petrolingual ligament
Describe the location of the artery:
Cavernous portion of ICA (C4)
From cavernous sinus to proximal dural ring
Describe the location of the artery:
Clinoid portion of ICA (C5)
From proximal to distal dural ring
Describe the location of the artery:
Ophthalmic portion of ICA (C6)
From distal dural ring to just proximal to Pcomm
Describe the location of the artery:
Communicating portion of ICA (C7)
Proximal to Pcomm origin to point where it bifurcates into ACA and MCA
