Where Does a Soul of a Man Reside?

Its funny that humankind always refer to things like the soul, or the heart, but we infact never really know where there are; or even so whether they exist in reality. You must be thinking that the heart does exist; but I am not refering to the boring blood-pumping heart. But the one that men have been boasting about this supernatural of love

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If asked which part of you that really is you; that is of your total self, will you say it would be your soul? Something that you want to keep to yourself; your identity.
Have you always heard of people saying that a kind soul lasts forever? I mean, how does it last when we dont even know if it exists in the first place?
If a man loses all of his senses, is he still a man?
If a man loses his legs do you still call him a man?
If a man loses his two hands, is he still recognizsable?
If a man loses all the skin to fire, hideous and frightening, will he still be the one you once loved?
If a man is all paralysed, no sense and only reaction he can give is a blink of an eye; he is still the same man you once knew.
If I borrow your heart organ, would I still be me?
If I borrow a dead man's eyes; would I still be me?
If I transplant my face, would I still be me?
If I change my eyes, ears, nose, hair, legs, torso, hands but not my brain, would I still be me?
Would I still be the same soul?
Does the soul reside in the brain?
If the man loses all his memories, will you train him patiently hoping that he will again remember all those sweet moments?
If a man is brain dead, will you wait next to him hoping for one day he will wake up yet again?
If the brain is the soul, does it mean, electrical appliances would have souls too? As the brain is full of electrical signals.
Then where does this soul reside?
What really makes us different from other things? Arent we all made of the same carbons?