Respiratory system, artwork - stock illustration

Respiratory system. Computer artwork of a naked woman with a healthy respiratory system, showing the voice box (larynx, just below the chin) and the trachea (windpipe), which splits into two bronchi (one bronchus for each lung). Inside the lungs (pale blue) the bronchi further divide into many bronchioles. Each bronchiole becomes smaller, finally ending in alveoli (tiny air sacs).