Answer to Tachy Tacky

Correct answer is A. Tachycardia refers to a heart that beats at a much faster rate than normal because it is receiving no parasympathetic innervation.  Regrettably this condition can be an outcome of surgery for lung metastasis if the lung tumor has metastasize to the indicated location of the trachea. At this point, the deep cardiac plexus is located and receives fibers from both the right and left vagus.

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Answer to this question is based on material presented in lectures 13 of the Thorax Lecture Series.