Biology — Gas Exchange at the Alveolus

{
  "elements":[
    {"data":{"id":"air","label":"Alveolar air (high O2)"}},
    {"data":{"id":"wall","label":"Alveolar wall (thin, moist)"}},
    {"data":{"id":"cap","label":"Capillary blood"}},
    {"data":{"id":"o2","label":"O2 into blood"}},
    {"data":{"id":"hb","label":"Binds haemoglobin"}},
    {"data":{"id":"co2","label":"CO2 out of blood"}},
    {"data":{"id":"exhale","label":"Exhaled"}},
    {"data":{"source":"air","target":"wall"}},
    {"data":{"source":"wall","target":"cap"}},
    {"data":{"source":"air","target":"o2","label":"diffusion"}},
    {"data":{"source":"o2","target":"hb"}},
    {"data":{"source":"cap","target":"co2","label":"diffusion"}},
    {"data":{"source":"co2","target":"exhale"}}
  ],
  "layout":{"name":"breadthfirst","directed":true}
}