Nerves & hormones.
warmblooded
Every body system is affected by every other body system.
Your body is the sum of all its systems. There are no "other systems". All the body's systems have to be working together or the body will not be able to stay alive.
The digestive system is different from the other human body systems because the digestive system holds food and no other human body system does also the digestive system has organs that none other human body systems have.
the brain
Body systems work together to keep the body healthy and the body systems are interdependent (they rely on each other).
It delivers blood to the other systems.
All the systems of the body work together; there are no isolated systems.
The brain gives the orders to the other body systems by the central nervous system.
how does the lungs help the other systems to keep the body healthy?
The nervous system is the central control that sends nerve signals throughout the body for other systems to regulate.
the circulatory system helps other systems function because it circulates blood to the other systems in your body and that helps the other systems function because the other systems have to pass that through that system