A 73-year-old man with a history of hypertension and type 2 diabetes mellitus presents with the sudden onset of right-sided paralysis. An ultrasound study shows significant atherosclerosis in a major artery that is embryologically derived from one of the aortic arches. The artery that is most likely involved in this patient’s paralysis is derived from which of the following aortic arches?
(A) First aortic arch
(B) Second aortic arch
(C) Third aortic arch
(D) Fourth aortic arch
(E) Sixth aortic arch
First arch: maxillary artery
Second arch: stapedial artery
Third arch: common carotid
Fourth arch: aortic and subclavian arches
Sixth arch: pulmonary arteries
A 73-year-old man with a history of hypertension and type 2 diabetes mellitus presents with the sudden onset of right-sided paralysis. An ultrasound study shows significant atherosclerosis in a major artery that is embryologically derived from one of the aortic arches. The artery that is most likely involved in this patient's paralysis is derived from which of the following aortic arches?
(A) First aortic arch
(B) Second aortic arch
(C) Third aortic arch
(D) Fourth aortic arch
(E) Sixth aortic arch
a 73-year-old man with a history of hypertension and type 2 diabetes mellitus presents with the sudden onset of right-sided paralysis. An ultrasound study shows significant atherosclerosis in a major artery that is embryologically derived from one of the aortic arches. The artery that is most likely involved in this patient's paralysis is derived from which of the following aortic arches?
(a) first aortic arch
(b) second aortic arch
(c) third aortic arch
(d) fourth aortic arch
(e) sixth aortic arch
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