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The circulatory system is necessary in a complex multicellular organism like a human because oxygen must be circulated throughout the body to feed the organs and tissues. The blood also removes waste from the organs and tissues (the exchange of gases takes place during circulation). Tiny vessels must pass near every cell in the body and there are a trillion of them.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoYou get oxygen and the nutrition for the cells via circulatory system, only. The carbon bi oxide and waste products of metabolism are carried away by the circulatory system, only. Every living cell in your body get this benefit.
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Why do larger organisms need a circulatory system and amoeba do not?
We are eukaryote which means are cells are more advanced than there's. And since we have more cells than a amoeba. Our cells carry oxygen to the brain and other organs in the body. A amoeba dose not have a brain. So it doesn't need a circulatory system.
Why is a circulatory system not needed in very small organisms?
Because of their very small size and lack of complexity, diffusion and osmosis are sufficient to supply the whole organism with its needs, and therefore, they do not need a circulatory system
When do you need the circulatory system?
Always! you need the process of the circulatory system in order to breathe and exhale waste.
What doctor would you need if the circulatory system fails?
you would need a cardiology doctor if the circulatory system fails
Why does cockroach not need a circulatory system?
Cockroaches do have circulatory systems, they are are open circulatory systems
The general need for a circulatory system?
There is definitely a general need for a circulatory system. This system carries blood, oxygen, and nutrients to all parts of the body.
What is the disadvantage of a single circulatory system?
The need for a powerful heart and greater energy expenditure are both disadvantages of a closed circulatory system. Even with its disadvantages, a closed circulatory system is much more efficient than an open one.
What system in your body does not need muscle tissue?
circulatory system
How do organisms live without a circulatory or respiratory system?
You don't need a "system" if you're small enough so that the function can be distributed throughout your entire body - as are all single celled organisms. But it works all the way up through jelly fish.
Do you need the circulatory system to for survival?
yes, of course.
If the circulatory system isn't working what diseases may occur?
If your circulatory system is not working, you do not need to worry about diseases because you will be dead.
What does the circulatory and excretory system aid in?
the circulatory system distributes oxygenated blood all over your body, which your organs need. The excretory system i dno
