Practice question

Correct option is B, Extra air inhaled after normal inspiration. In Lung Volumes, Capacities and Regulation, the accurate description is Extra air inhaled after normal inspiration, and that is what you should commit to memory. Keep the definition tight and the role clear — this is mainly a definition check, and Extra air inhaled after normal inspiration is the standard term or meaning used in Lung Volumes, Capacities and Regulation. Then Extra air inhaled after normal inspiration is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence.