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    • Earthworm dissection showing aortic arches.
    Rights: Sara L Roggemann, Three Flowers Photography Published 12 June 2012, Updated 23 March 2017 Size: 25 KB Referencing Hub media

    Most earthworm species have five aortic arches or ‘hearts’ that move blood around the body. The number of aortic arches varies amongst species.

    Acknowledgement: Sara L Roggemann, Three Flowers Photography

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      INTERACTIVE

      Inside of an earthworm

      The earthworm’s body is well adapted for life in the soil. Click on the labels to see images and learn more. Click the green button to see what’s on the outside of an earthworm.

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