"Alveoli are like small balloons that inflate and deflate with air during respiration."
"In this analogy, the alveoli are like the leaves of the tree "
"The alveoli are like a bunch of grapes on the end of the bronchial tubes, and with one of the diseases there are less of them "
"Alveoli are like tiny bags of air with walls so thin that gases can pass through them. There are around 300 million alveoli in the lungs "
"Alveoli are like rubber bands. They are able to stretch wide open to receive the air we breathe in and then collapse and push air out. "
"The alveoli are like the loading docks where trucks pick up their load. Capillaries are so small, in some places, that only *one* RBC at a time can get through!"
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.