the diaphragm functions in breathing

air alveoli anatomical anatomy biology body breath breathe breathing breathtaking bronchi bronchus cavity chest diagram diaphragm drawing education exercise exhalation figure function gasp health healthcare heart hospital human illustration inhalation internal larynx lobe lung lunge lungs medical medicine mouth nasal nose organ organs oxygen pain pharynx physiology pleura pleural pressure problems pulmonary respiration respiratory science structure system systems thoracic trachea training vector