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An earthworm does not have any heart at all. But they do have an organ that acts similarly to a heart and is usually called a heart just for simplicity's sake, although is is also called an aortic arch. Earthworms have five of these arches. In between each arch is a gland that helps the worm digest calcium, which it gets from eating a lot of dirt. size The heart and calciferous gland section makes up less than five percent of an earthworm's total body length, no matter how big the individual worm gets.
Function
The aortic arches (hearts) help pump blood around the body of the earthworm in a similar way to animals that have only one multi-chambered heart. Worm "hearts" don't have chambers. Worms also don't have lungs. They absorb oxygen through their skin and then it gets into their blood vessels. The dorsal blood vessel does a bit of the pumping work, with the hearts helping to keep blood pressure steady.
by' Katie Burgess
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoThey don't have harts in the traditional sense - but have a series of chambers along booth of the main blood vessels which extend along the length of the body.
See the related link for the wikipedia entry on earthworms for more details.
I moved this out of the original categories of 'reptiles, pandas and orcas' as it has nothing to do with ANY of them. I placed it in the invertebrates - where it should have been !
Wiki User
∙ 13y agoYes! Earth worms have 5 ring like hearts.
Wiki User
∙ 15y agoofcourse yes.
Wiki User
∙ 11y agono the have five
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Why does the worm have multiple hearts?
Worms have 5 hearts. Worms have an organ that behaves like a heart, an aortic arch, they have five arches.
What species having 5 hearts?
worms
Why do worms have 5 hearts?
Because they were made like that.
How many hearts are there in an earthworm?
5
Which animals have multiple hearts?
I think worms,remember insects are animals! The number of aortic arches (hearts) varies for specie to specie. The common earth worm has 5 'hearts'!
What animal has the most hearts?
It was speculated that some dinosaurs may have had two hearts to help pump their blood around. Earth worms supposedly have six hearts.
How many hearts does the worm have?
5, like all worms.
Do worms have heart?
Technically, they don't. There are five objects similar to hearts that are called aortic arches. I'm not positive all types of worms have these aortic arches but this is the most probable answer.
Do earthworms have 16 hearts?
No!! the earth worm has 5 hearts
Do worms have 5 hearts?
Of course that's why if you cut one in half it will still live.
What is the animals that has four pair of heart?
Earth worms have 4 pairs of heart. pheretima has 4 pairs of hearts.
Where are worms noses on their body?
worms don't have noses at all!they hardly have eyes,ears, and mouth!there's something amazing-they have 5 hearts!5haerts!
