Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*?

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Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*? Answer: Because nitric oxide breaks down quickly and thus cannot travel far

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.