Expiratory reserve volume (ERV) represents:
Pick C: Extra air exhaled after normal expiration. Thinking about Lung Volumes, Capacities and Regulation in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: Extra air exhaled after normal expiration is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. Hence Extra air exhaled after normal expiration is correct. Treat this as a building block for the rest of Lung Volumes, Capacities and Regulation; neighbouring to
Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.