The placenta as an example of a peripheral heart.
D001775:Blood Circulation; D002196:Capillaries; D005260:Female; D005312:Fetal Blood; D005333:Fetus / Q000098:blood supply*; D006321:Heart; D006801:Humans; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy
BLOOD CIRCULATION; CAPILLARIES; FETUS/blood supply; PLACENTA/blood supply