Did you know that the Earthworm has 5 hearts? yeah, but its not hearts, its aortic arches. This arches pump blood through the circulatory system & work as a confluence of dorsal and ventral blood vessels.
Did you know that the Earthworm has 5 hearts? yeah, but its not hearts, its aortic arches. This arches pump blood through the circulatory system & work as a confluence of dorsal and ventral blood vessels.