Practice question

Move air between atmosphere and alveoli (B) is the right choice. This sits at the heart of Cardiac Cycle 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: the functional job described in the stem is exactly what Move air between atmosphere and alveoli does in Cardiac Cycle and Regulation. That reasoning supports Move air between atmosphere and alveoli. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ.