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.
The cardiovascular system consists of the heart, blood, and blood vessels, like veins and arteries. There is a related system to the cardiovascular system called the lymphatic system which moves lymphatic fluid through the spleen, lymphatic tissues, and lymphatic vessels. Some sources consider these two to be one system, the circulatory system, because they both circulate fluids in the body.