No
The gills would not function well because they need to get oxygen flowing through them to make the creature able to breathe.
Earthworms have five main blood vessels within their bodies. These vessels function in a similar function as would hearts in other animals.
we need oxygen to function because without oxygen we would suffocate to death. without oxygen we wouldn't exist right now.
you would not be able to sents the nutrients and oxygen to your cells and you would be unable to live.
The function of blood in circulatory is to bring oxygen to the cells around the body. Without blood cells would not be able to get oxygen.
It can, but only indirectly- that is, from not being able to get oxygen to the brain successfully. That would only happen in severe forms of the disease, where red blood cells clog even medium-sized blood vessels. Someone with that would show all the signs of oxygen deprivation, such as decreased cognitive function and irritability.
Like all cells in our bodies, the cells in our eyes require oxygen and nutrients, and they need to eliminate waste. For many animals, transporting oxygen, nutrients, and cellular wastes is done using the blood vessels. So it only makes sense that we would have blood vessels in our eyes.
human intestine
oxygen
One of the ways to do this would be using Electrolysis.
The coronary blood supply is the arteries which supply the heart itself; in order for the heart to function it needs a good supply of oxygen just the same as any other organ/muscle. Without the coronary blood supply the heart would not be able to pump blood around the body, a disruption in this blood supply would cause a heart attack.
Capillaries, which are the smallest of the blood vessels, are the site of gas exchange...carbon dioxide diffuses out of surrounding cells into the gills to be lost into the environment, and oxygen diffuses from the environment into the gill cells and then surrounding tissues. The gills function like the lungs of a fish, so large numbers of capillaries in these structures function to supply oxygen/get rid of waste carbon dioxide for the organism.