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Question

Most fatal thrombosis leading to myocardial infarction is of


A
Right circumflex coronary artery
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B
Right coronary artery
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C
Left anterior descending artery
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D
Left circumflex coronary artery
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Solution

The correct option is A Left anterior descending artery
The arteries descend down the heart by carrying the oxygenated blood. 'Left Anterior Descending' (LAD) artery provides the major blood supply to the interventricular septum and bundle of His which plays an important role in the contraction of heart and transmission of an impulse. The blockage of this artery is the major cause for coronary artery disease that can lead to impairment or death (infarction) of the conducting system. The result is a block of impulse conduction between the atria and the ventricles, known as right / left bundle branch block.
So, the correct answer is option C.

Biology

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