The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). the trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi. the bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic. the bronchioles eventually end in clusters of microscopic air sacs called alveoli. Notice, after 30 years the inside of the lung has become covered with cancerous spots as well. image 3: comparison of healthy healthy lungs picture lung and smoker's lung. a healthy lung is reddish in color. after smoking for many years the chemicals from the cigarettes stick to the lungs turning them a black color. is easy to lose sight of the bigger picture when it comes to investing tobacco companies pay Find the perfect healthy lungs x ray stock photo. huge collection, amazing choice, 100+ million high quality, affordable rf and rm images. no need to register, buy now!. full frontal shouted at...