The parasympathetic nervous system is responsible for stimulating digestion and causing the bladder to contract.
Explanation
- The parasympathetic nervous system, a division of the autonomic nervous system (ANS), controls involuntary body functions such as promoting digestion by increasing peristalsis and gastrointestinal secretions.
- It also causes the bladder to contract to enable urination by stimulating the detrusor muscle of the bladder while relaxing the urethra to allow urine to pass.
- This system works in contrast to the sympathetic nervous system, which generally inhibits digestion and promotes urine storage by relaxing the bladder.
Thus, the correct completion for the sentence is: "The parasympathetic nervous system is responsible for stimulating digestion and causing the bladder to contract".
