Why do all the other systems need digestive system?
The digestive system is responsible for breaking down food into nutrients that the body can use for energy, growth, and cell repair. Without a functioning digestive system, the body would not be able to obtain the nutrients it needs to function properly, and all of the other systems would eventually suffer as a result.
For example,
• The circulatory system would not be able to transport nutrients to the cells
• The respiratory system would not be able to provide oxygen to the cells
• The muscular system would not be able to contract
• The nervous system would not be able to function properly
Ultimately, without a properly functioning digestive system, the body would not be able to survive. Therefore, all of the other systems depend on the digestive system for proper nutrition and health.