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    What animal has the most hearts?

    Question #104370. Asked by skatharaki. (Apr 03 09 8:11 PM)


    deaconblues63

    		The octopus

    An octopus has three hearts. Two hearts are associated with the gills and are called gill hearts.

    http://www.bisdragons.com/students2001/highschool/seacreatures/octopus.html

    Apr 03 09, 8:18 PM
    Flamis

    		As I vaguely recalled from high school biology, the earthworm has five hearts.

    http://yucky.discovery.com/noflash/worm/pg000102.html

    However, I think much happens on what you actually call a heart.

    Apr 03 09, 8:36 PM
    scottietwenty3

    		A typical lumbricid (earth worm) will have 5 hearts.

    http://en.wikipedia.org/wiki/Earthworm

    Apr 03 09, 9:28 PM
    foosyerdoos

    		The cockroach has (arguably) 13 hearts.
    http://www.suite101.com/article.cfm/our_beautiful_bodies/104026

    Apr 04 09, 12:10 AM
    looney_tunes

    		The earthworm has five pairs of hearts, which would make a total of ten. Dissection (the reason I avoided Biology in High School!) instructions:

    "Follow the dorsal vessel anteriorly to the esophagus and find the five pairs of large, contractile, segmental blood vessels which are the hearts ."

    http://webs.lander.edu/rsfox/invertebrates/lumbricus.html

    Some describe the cockroach as having 13 hearts, others describe it as having a 13-chambered single heart. "A cockroach has a chain of hearts, in all totaling to 13. Some regard it as a single heart with 13 chambers. These are funnel shaped chambers with a pair of tiny holes called ostia."

    http://www.suite101.com/article.cfm/our_beautiful_bodies/104026



    Apr 04 09, 12:31 AM

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