The Vital organs are the internal organs of the human body necessary to maintain life. Without all vital organs functioning adequately, a person will quickly die. The major vital organs are

• the Brain regulates biorhythms such as respiration, heartbeat, hormone production, sensory information, and muscle movement
• the Heart maintains the flow of oxygenated blood throughout the body
• the Lungs inhale air and oxygenate the blood
• the Liver removes cellular waste from the blood and passes it to the bladder

Other organs associated with digestion and waste disposal are also vital to long-term survival. However many people live without various body parts such as kidneys, bowel, arms, legs.