Practice question

500 mL (B) is the right choice. This sits at the heart of Lung Volumes, Capacities and Regulation: the wording points straight to what is happening in the tissue or organ system. A useful study habit is to ask what the structure or process is for: 500 mL is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. That reasoning supports 500 mL. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ. When you practise, cover the choices first, write 500 mL from memory, then reveal the letter — that habit builds real recall for Lung Volumes, Capacities and Regulation.