Module 7: Organ Systems and Homeostasis

In this module, you explored the structures and functions of the human circulatory, respiratory, digestive, excretory, nervous, and immune systems. These systems work together like a machine, helping your body maintain homeostasis. The nervous system sends messages to and from your brain and body, instructing it on how to perform. The circulatory and respiratory systems work together to oxygenate your blood and expel carbon dioxide from your body. The digestive system converts the food you eat into energy and nourishment for your body, and works with the excretory system to rid your body of wastes. The immune system protects your body from pathogens that have the potential to disrupt your other systems.

Serious health issues can occur when any of these systems malfunction. You explored some of these issues and ways to prevent and treat them. Maintaining a healthy lifestyle is one way to lessen your chances of encountering serious health issues.