A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Why do earthworms have hearts if they don't have blood?

Best Answers

An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm. These vessels are the aortic arches, dorsal blood vessels, and ventral blood vessels. The aortic arches function like a human heart. read more

The do have blood. It has hemoglobin, it’s red like ours, and flows through blood vessels, impelled by the beating of their hearts. Excerpt from Earthworms “3. Circulatory System “Another important organ system is the circulatory system. The earthworm has a closed circulatory system. read more

The movements of the worm's body make the blood flow back to the back end of the body, and the hearts pump the blood forward again. Carbon dioxide dissolves out of the blood back to the skin. Eating: Worms do not have teeth, but their mouths are muscular and strong. read more

Encyclopedia Research

Wikipedia:

Image Answers

Further Research