|MadSci Network: General Biology|
In a way, yes and no at the same time. The respiratory system is one of the most important systems of the body and if the respiratory system does not work, we are surely going to die.
But let's look at the problem more carefully. You see, the human body is a coordinated unit. Now in a coordinated unit, all the organ systems (like the circulatory system, the nervous system, the digestive system,etc.) work in a manner so as to complement each other. No system is complete without each other's help. All these organ systems function together to maintain a constant internal environment in our body, something which is known as "homeostasis".
Lets take an example, consider a healthy human being who is totally healthy. So he respires with his lungs properly. But what happens now if the oxygen he has taken in does not reach to the body cells? What I mean to say is, that if the circulatory system (blood or heart or both) does not function properly, then the body cells will be deprived of oxygen and then there's no use respiring because the oxygen is not reaching the tissues and the person is bound to die.
So the answer to your question is yes but no at the same time.
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