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  #1  
Old 01-26-2013
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Arrow Billy Step 1 Questions # 104

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 patientís 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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  #2  
Old 01-26-2013
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Anyone?
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  #3  
Old 01-26-2013
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3rd aortic arch
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Old 01-26-2013
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First arch?

First arch: maxillary artery
Second arch: stapedial artery
Third arch: common carotid
Fourth arch: aortic and subclavian arches
Sixth arch: pulmonary arteries
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  #5  
Old 01-26-2013
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Third brachial arch
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  #6  
Old 01-26-2013
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Stop

OH LAWWDS I first read "facial paralysis"

I change my answer to third branch
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  #7  
Old 01-26-2013
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Quote:
Originally Posted by billy View Post
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

Relax Billy, it's not even 24 hours. The answer is c.
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Old 01-27-2013
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Quote:
Originally Posted by billy View Post
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 patientís 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
c third arch
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Old 01-27-2013
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Default answer

third aortic arch
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Old 01-27-2013
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Default C

(C) Third aortic arch
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