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NEET UG BIOLOGY MCQ: CHEMICAL COORDINATION AND INTEGRATION

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Blood pressure lowering hormone is secreted from an organ, present in
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Correct option: A
Thoracic cavity
Option A (Thoracic cavity) is correct because the atrial natriuretic peptide (ANP), a blood pressure lowering hormone, is secreted from the heart, which is present in the thoracic cavity.

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