How does kidney failure prevent the excretory system from operating? The intestines stop working. It does not affect the excretory system. Blood is not properly filtered, leaving waste in the blood. The bladder stops working.

Blood is not properly filtered

Explanation: Kidneys filter out the blood for any toxins like alcohol. This is why people get alcohol poisoning if they drink too much booze because their body can't process the amount of alcohol they've consumed.

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.