There are many types of plague in the world, and here are some of them: bubonic plague, septicemic plague, pneumonic plague, pharyngeal plague, meningeal plague, asymptomatic plague, abortive plague, cellulocutaneous plague, and there may be some more.
Answer:
The cardiovascular system helps maintain homeostasis by continually supplying the central nervous system--the brain and spinal cord--with oxygen and glucose. Brain cells start dying after just one minute without oxygen. The brain is the control center for all of the body's homeostatic processes.