Cerebrovascular Anomalies verified questions and solution A+ grade
How many congenital variations are their in the structure of the circle of Willis - -9
What is the most common anomalies of the circle of willis
-this decreases the potential for.... and may isolate the..... - --absence or hypoplasia of
one or more of the communicating arteries
-collateral routes and may isolate the anterior and posterior circulations or the left and right
hemispheric carotid territories
If the ACOA is missing, there can be no - -crossover from the contralateral ICA
If both PCO arteries are missing, there will be no - -posterior to anterior shunting of
blood
If both the ACOA and even one PCOA is missing, then there is no - -possibility of any
natural intracranial collateral circulation
What is the most common extracranial anomaly formations - -they involve the origins of
the carotid and vertebral arteries
most common extracranial anomaly
-it occurs when... - --bovine arch
-there is sharing or a close association between the origin of the brachiocephalic artery with the
left CCA
other extracranial anomalous formations involve the origin of the - -vertebral artery from
the aortic arch
How many congenital variations are their in the structure of the circle of Willis - -9
What is the most common anomalies of the circle of willis
-this decreases the potential for.... and may isolate the..... - --absence or hypoplasia of
one or more of the communicating arteries
-collateral routes and may isolate the anterior and posterior circulations or the left and right
hemispheric carotid territories
If the ACOA is missing, there can be no - -crossover from the contralateral ICA
If both PCO arteries are missing, there will be no - -posterior to anterior shunting of
blood
If both the ACOA and even one PCOA is missing, then there is no - -possibility of any
natural intracranial collateral circulation
What is the most common extracranial anomaly formations - -they involve the origins of
the carotid and vertebral arteries
most common extracranial anomaly
-it occurs when... - --bovine arch
-there is sharing or a close association between the origin of the brachiocephalic artery with the
left CCA
other extracranial anomalous formations involve the origin of the - -vertebral artery from
the aortic arch
