Biology — Parturition (Birth)

{
  "elements":[
    {"data":{"id":"ready","label":"Fetus ready"}},
    {"data":{"id":"oxytocin","label":"Oxytocin released"}},
    {"data":{"id":"contract","label":"Uterine contractions"}},
    {"data":{"id":"cervix","label":"Cervix stretches"}},
    {"data":{"id":"more","label":"More oxytocin (positive feedback)"}},
    {"data":{"id":"birth","label":"Birth"}},
    {"data":{"source":"ready","target":"oxytocin"}},
    {"data":{"source":"oxytocin","target":"contract"}},
    {"data":{"source":"contract","target":"cervix"}},
    {"data":{"source":"cervix","target":"more"}},
    {"data":{"source":"more","target":"oxytocin"}},
    {"data":{"source":"contract","target":"birth"}}
  ],
  "layout":{"name":"breadthfirst","directed":true}
}