| | Alternative Medicine | Breathwork When the lungs inflate what tiny structures appear? When the lungs inflate, millions of tiny structures called alveoli appear. These alveoli are what the lungs inflate to enable greater surface area for gas exchange. Breathwork - Related Articles What is the racial breakdown of those who develop cataracts? What does a dentist check for? What is chlimidia? What Are the Causes of Macrocytic Anemia in War Veterans? Uses of Sweet Oil Does crossing your legs damage them? Psychosocial Effects of Coronary Heart Disease