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The purpose of a circulatory system is to distribute nutrients and oxygen to every cell in the body. As hydras lack a circulatory system such distribution must be accomplished by diffusion along, which is a very slow process and inadequate for anything of any size. So the body form of a hydra is limited in size due to a lack of a circulatory system.

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The absorption and circulation of materials in a hydra are most similar to the absorption and circulation of materials in a?

sponge. Both hydra and sponges are simple aquatic animals that rely on diffusion for nutrient absorption and lack a circulatory system. Nutrients are taken in through their body walls and transported within the body through simple diffusion rather than a dedicated circulatory system.


What is the circulatory system in the monkeys body?

closed circulatory system (double circulatory system)


What is the circulatory system in the body?

closed circulatory system.


What are the body parts of the arteries?

The circulatory system


What three things does the circulatory system deliver to body cells?

The circulatory system transport oxygen and respiratory material (food) to the billions of our body cells.


Which body system is responsible for transporting blood throughout the body?

The circulatory system is the transportation system of your body.


What body system has the heart as its main organ?

the heart is part of the circulatory system in the body.


In the human body which system is the heart Circulatory or Nerves?

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How does the circulatory system affect other body systems?

The circulatory system affects the other body systems because the circulatory system gives oxygen to the other system. Without the circulatory system the other systems would not work.


Which body system acts as insurance for the circulatory system?

The Lymphatic system acts as "insurance" for the circulatory system.


The circulatory system works with what other system to get nutrients to all body parts?

The circulatory system works with digestive system to circulate the nutrients to all the body parts. The nutrients are digested and absorbed by the digestive system. The circulatory system circulates the nutrients throughout the body.


The circulatory system is most dependent on which other organ?

The circulatory system is dependent on the lungs. The lungs bring oxygen into the body, and the circulatory system transports that oxygen to body tissues.