Homeostatic Relationships


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All of the systems in an organism are interconnected. A simple example is the connection between the circulatory and respiratory systems. As blood circulates through your body, it eventually needs fresh oxygen (O2) from the air. When the blood reaches the lungs, part of the respiratory system, the blood is re-oxygenated. Your stomach, part of the digestive system, constantly interacts with your endocrine system and spreads hormones throughout your body.

The circulatory system pumps blood through the respiratory system and circulates hormones of the endocrine system. Also, the circulatory system transports nutrients to muscular system and has a direct connection with the lymphatic system.
The urinary system is also closely related to the circulatory system by virtue of the processes of cleansing the blood of waste, removing excess fluids and generally keeping other fluids in balance.