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| Image: Don Bliss/National Cancer Institute | |
The human body is made up of several organ systems that work together as one unit. Some of these systems include the:
- circulatory system
- digestive system
- nervous system
- reproductive system
It is important to keep in mind that these systems don't just exist as individual units. The final product of these cooperating systems is one unit called the body. To learn about ten major organ systems of the body, see Organ Systems.
More Body Systems:
Organ Systems Quiz
Do you know which organ system contains the largest organ in the body? Test your knowledge of human organ systems.
Nervous System
This system is responsible for sending, receiving, and interpreting information from all parts of the body.
Limbic System
Limbic system structures are involved in many of our emotions and motivations, particularly those that are related to survival.



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