Biology · Human Respiratory System
कौन सी संरचनाएं वक्ष गुहा (thoracic cavity) के कुल आयतन को महत्वपूर्ण रूप से बढ़ाए बिना गैस विनिमय के लिए फेफड़ों के सतह क्षेत्र को बढ़ाती हैं?
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