The urinary systems main function is to eliminate waste from the body. With that being said, cells of the body get their energy from burning sugars, fats and proteins. Oxygen is required for many of...
with nervous system: the skull (part of the skeleton) protects the brain (nervous system) from injuries. Also, the vertebrae (part of the skeleton) protects the spinal cord (nervous system).
The urinary and immune systems interact because if you have a parasite in your urinary tract, it can cause a disease that the parasite has to get into your immune system.
