- the blood flowing through the circulatory system
- The circulatory system is an organ system that passes nutrients (such as amino acids and electrolytes), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases and help stabilize body temperature and pH to maintain homeostasis.
- A serious infection that occurs when bacteria from an infected site on the body invade the bloodstream. If bacteria continue to multiply without being stopped by antibiotics or the patient's immune system, there is a high risk of septic shock, a potentially life-threatening condition.