the percentage of oxygen and carbon dioxide gases present in inheld and exhaled air

disease diagram care drawing trachea education biology bronchi pulmonary breathing organ science diaphragm chest people cartoon health nose breath inspiration air exhale inhale oxygen respiratory body medical meditation inhalation lifestyle breathe exhalation relax exercise relaxation human man vector anatomy expiration system lung respiration calmness healthy percentage carbon dioxide gases present inheld exhaled humans typically 12-20 breaths minute inhaling exhaling font brand text line presentation hand eye circle face pink finger head arm