There are 5 aortic arches, they are "hearts". They pump blood around the worm and help digestion.
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.
Aortic arches are absent in earth worm .
aortic arches is another term for heart, and an earthworm has 5.
The aortic arch arches to the left as it emerges from the heart.
The function of an earthworm's aortic arches are to pump blood to the ventral blood vessel and into the body.
They are responsible for holding up the aortic feet.
Worms have 5 hearts. Worms have an organ that behaves like a heart, an aortic arch, they have five arches.
The earthworm doesn't really have a heart. Instead, it has highly muscular blood vessels called the aortic arches that pump their blood.
Blood
Is a right sided aortic arch normal?
It has aortic arches which are objects similar to hearts. There are four aortic arches in a single worm.
balls