Alveoli are the endpoint of the respiratory system. When you breathe, air moves through your respiratory system in the ...

These end in microscopic air sacs called alveoli. The process of ventilation ... Parts of the model represent different parts of the respiratory system as shown here. The model, which is air ...

Alveoli At the ends of bronchioles are tiny ... The Human Body viewers are taken on a journey around the Circulatory system. BBC Teach has thousands of free, curriculum-linked resources to help ...

Alveolar macrophages — white blood cells that are part of the immune system and found in the alveoli or ‘air sacs’ of the lungs — remove dust and microorganisms from the airways.