a chronic lung condition caused by damage to tiny air sacs in the lungs called alveoli. Healthy lungs are made up up of millions alveoli with elastic walls that take oxygen into the body and expel ...

Alveoli in the lungs, fish gills and the villi in the small intestine are adapted so that they have short diffusion distance, big concentration difference and large surface area. This means that ...

At the end of the alveoli are capillaries, which are tiny blood vessels. Oxygen moves from the lungs to the bloodstream through these capillaries. In exchange, carbon dioxide moves from the blood ...

a: Gross anatomy of lung and thorax. b: Microscopic anatomy of bronchial wall. C: View of terminal airway and alveoli. d: Alveolar structure.

These three features are particularly important to our lungs for efficient ... such as the small intestine, body tissues and placenta. Thin lining: the lining of the alveoli is very thin so ...