WBR0139: Difference between revisions

Jump to navigation Jump to search
VisualWikitext
No edit summary
No edit summary
Line 1: Line 1:
{{WBRQuestion
{{WBRQuestion
|QuestionAuthor={{Rim}}
|QuestionAuthor={{Rim}} {{Alison}}
|ExamType=USMLE Step 1
|ExamType=USMLE Step 1
|MainCategory=Embryology
|MainCategory=Embryology
Line 20: Line 20:
|MainCategory=Embryology
|MainCategory=Embryology
|SubCategory=Cardiology
|SubCategory=Cardiology
|Prompt=A 72-year-old male patient presented to the emergency department for acute onset of severe anterior chest pain that is radiating to his back.  Initial investigations reveal no changes on ECG and negative cardiac enzymes.  A chest X-ray shows widening of the mediastinum and MRI confirms the presence of intimal tear consistent with an ascending aortic dissection. What is the embryological origin of the ascending aorta?
|Prompt=A 72-year-old male patient presents to the ER with an acute onset of severe anterior chest pain that is radiating to his back.  ECG reveals no ischemic changes negative cardiac enzymes are within normal ranges.  A chest X-ray displays a widening of the mediastinum and an MRI confirms the presence of an intimal tear consistent with an ascending aortic dissection. Which of the following most likely is the embryological origin of the ascending aorta?
|Explanation=Educational objective: The truncus arteriosis gives rise to the [[ascending aorta]] and the [[pulmonary trunk]].  The [[bulbus cordis]] gives rise to the [[right ventricle]] and the smooth part of the [[left ventricle]].  The sinus venosum gives rise to the coronary sinus.  The third aortic arch gives rise to to the [[common carotid artery]] and the proximal part of the internal carotid artery.  The fourth [[aortic arch]] gives rise to the proximal part of the right subclavian artery.
 
|Explanation= The truncus arteriosis gives rise to the [[ascending aorta]] and the [[pulmonary trunk]].
 
|EducationalObjectives= The truncus arteriosis gives rise to the [[ascending aorta]] and the [[pulmonary trunk]].  The [[bulbus cordis]] gives rise to the [[right ventricle]] and the smooth part of the [[left ventricle]].  The sinus venosum gives rise to the coronary sinus.  The third aortic arch gives rise to to the [[common carotid artery]] and the proximal part of the internal carotid artery.  The fourth [[aortic arch]] gives rise to the proximal part of the right subclavian artery.
 
|AnswerA=Truncus arteriosis
|AnswerA=Truncus arteriosis
|AnswerAExp=Truncus arteriosis gives rise to the [[ascending aorta]] and the [[pulmonary trunk]].
|AnswerAExp= The [[truncus arteriosis]] gives rise to the [[ascending aorta]] and the [[pulmonary trunk]].
|AnswerB=Bulbus cordis
|AnswerB=Bulbus cordis
|AnswerBExp=[[Bulbus cordis]] gives rise to the right [[ventricle]] and the smooth part of the left ventricle.
|AnswerBExp= The [[Bulbus cordis]] gives rise to the right [[ventricle]] and the smooth part of the left ventricle.
|AnswerC= venosum
|AnswerC= venosum
|AnswerCExp=Sinus venosum gives rise to the [[coronary sinus]].
|AnswerCExp= The Sinus venosum gives rise to the [[coronary sinus]].
|AnswerD=Third aortic arch
|AnswerD=Third aortic arch
|AnswerDExp=The third [[aortic arch]] gives rise to to the [[common carotid artery]] and the proximal part of the [[internal carotid artery]].
|AnswerDExp=The third [[aortic arch]] gives rise to to the [[common carotid artery]] and the proximal part of the [[internal carotid artery]].
Line 33: Line 37:
|AnswerEExp=The fourth [[aortic arch]] gives rise to the proximal part of the right [[subclavian artery]].
|AnswerEExp=The fourth [[aortic arch]] gives rise to the proximal part of the right [[subclavian artery]].
|RightAnswer=A
|RightAnswer=A
|Approved=No
|Approved=Yes
}}
}}

Revision as of 18:41, 9 July 2014
Author [[PageAuthor::Rim Halaby, M.D. [1] (Reviewed by Alison Leibowitz)]]
Exam Type ExamType::USMLE Step 1
Main Category MainCategory::Embryology
Sub Category SubCategory::Cardiology
Prompt [[Prompt::A 72-year-old male patient presents to the ER with an acute onset of severe anterior chest pain that is radiating to his back. ECG reveals no ischemic changes negative cardiac enzymes are within normal ranges. A chest X-ray displays a widening of the mediastinum and an MRI confirms the presence of an intimal tear consistent with an ascending aortic dissection. Which of the following most likely is the embryological origin of the ascending aorta?]]
Answer A AnswerA::Truncus arteriosis
Answer A Explanation [[AnswerAExp::The truncus arteriosis gives rise to the ascending aorta and the pulmonary trunk.]]
Answer B AnswerB::Bulbus cordis
Answer B Explanation [[AnswerBExp::The Bulbus cordis gives rise to the right ventricle and the smooth part of the left ventricle.]]
Answer C AnswerC::venosum
Answer C Explanation [[AnswerCExp::The Sinus venosum gives rise to the coronary sinus.]]
Answer D AnswerD::Third aortic arch
Answer D Explanation [[AnswerDExp::The third aortic arch gives rise to to the common carotid artery and the proximal part of the internal carotid artery.]]
Answer E AnswerE::Fourth aortic arch
Answer E Explanation [[AnswerEExp::The fourth aortic arch gives rise to the proximal part of the right subclavian artery.]]
Right Answer RightAnswer::A
Explanation [[Explanation::The truncus arteriosis gives rise to the ascending aorta and the pulmonary trunk.

Educational Objective: The truncus arteriosis gives rise to the ascending aorta and the pulmonary trunk. The bulbus cordis gives rise to the right ventricle and the smooth part of the left ventricle. The sinus venosum gives rise to the coronary sinus. The third aortic arch gives rise to to the common carotid artery and the proximal part of the internal carotid artery. The fourth aortic arch gives rise to the proximal part of the right subclavian artery.
References: ]]

Approved Approved::Yes
Keyword
Linked Question Linked::
Order in Linked Questions LinkedOrder::
Retrieved from "https://www.wikidoc.org/index.php?title=WBR0139&oldid=990945"