Nervous System & Excretory System: Understanding the Micturition Reflex

The correct answer is: Micturition reflex.

The nervous system controls the excretory system through a reflex called the micturition reflex. When the bladder is full, it sends a signal to the spinal cord, which then sends a signal to the brain. The brain then sends a signal back to the bladder, causing it to contract and empty.