You get a deficiency disease ... a different one for each element you lack.
Then your body would no longer exist.
You might gat a heart attack since insufficient blood passes through.
Dehydration
Dehydration.
you would dehydrate and die
When oxygen is insufficient the body cannot depend on the next step which is acetyl CoA, this enhances metabolism and it goes to the next step which is TCA cycle, here the body's metabolism is working to make more ATP. This is fuel for the body.
Ischaemia
Yes, that is a correct description of plasmapheresis. It is a procedure where whole blood is taken from the body, separated into its components (plasma and cellular elements), and then the plasma is either removed or replaced before the cellular elements are reinfused back into the body.
body temperature
The elements of the body are:Carbon, nitrogen,and oxygen
The body contains 27 elements
Insufficient blood flow thru the body