Enlightened witnesses can be those who themselves have risen from the depths. Individuals who have overcome great odds and great adversity. Sometimes this is the very thing required to create lasting empathy and feeling. For when we identify, we can extend ourselves that much more.
The Cardiovascular system links all the parts of our body and consists of the heart, blood vessels, and blood. The Cardiovascular system carries needed substances to cells and carries waste products away from cells.
This system sucks in all the fluid(s) left behind in the tissue spaces (Interstitial Fluid) plus any plasma proteins that escapre from the bloodstream and carry it back to the blood to ensure that the cardiovascular system has sufficient blood volume to operate properly.