Earthworms and Hearts
Name: Diana T
One of my 6th grade science students asked me the
following question, could you help me with the answer?
Here is the question: Why does an earthworm have five hearts?
They are not REALLY 5 hearts but a series of chambers that are
contiguous...if I remember correctly.
Peter Faletra Ph.D.
Office of Science
Department of Energy
As I recall, they are called Aortic Arches, and function as a heart.
---Nathan A. Unterman
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Update: June 2012