The aortic arches serve as a heart in an earthworm's circulatory system. There are five pairs of aortic arches, located near the head of the earthworm, that function much like a human heart. More » Pets & Animals Bugs Worms

The main function of the circulatory system is transporting blood, oxygen, hormones, nutrients and other important substances throughout the body. The circulatory system is actually two separate systems of circulation, p... More »

All vertebrates, segmented worms, such as earthworms, and cephalopods, such as squid, have closed circulatory systems. Closed circulatory systems allow larger animals to be much more active than those with open circulato... More »

The aortic arches in an earthworm function like the valves in a human heart. An earthworm has five pairs of aortic arches that pump blood into the dorsal and ventricle blood vessels throughout the worm’s body. More »

An earthworm has five aortic arches, each functioning similarly to a heart. The aortic arches have the purpose of pumping blood through the dorsal and ventral blood vessels. The dorsal blood vessel carries blood to the f... More »

Earthworms maintain homeostasis by having a dual circulatory system, which contains the closed circulatory system and the coelomic fluid for respiratory gases, food and waste. The circulatory system is comprised of five ... More »

The earthworm has a nervous system that is segmented like the rest of its body. The brain is found above the pharynx, and it is important for movement. Without the brain, the earthworm would constantly move. More » Pets & Animals Bugs Worms