Perishable and corruptible is the current status of the body wherein the world to come is imperishable and incorruption. Nothing will rot or go bad. Fruit will remain ever fresh until consumed and "the righteous will shine like the sun in the kingdom of their Father (Matthew 13:43)." So if you were to throw an apple into the sun, the apple would be totally consumed and converted into energy. And so there would be no need for a crapper, and I'm not so sure we would even produce spit anymore, since its purpose is to help 'break down' food. Also, another argument against blood in the resurrected body is the law of uncleanness although it may simple be that it still exists but is made somehow clean. Anyway, why would ovaries still produce considering there is only a limited amount of them each woman is allotted, and function of the loins becomes irrelevant apart from the burdensome filtering of waste.
So,
@JohnB, if you'd stop "priming the pump' so much, the reservoir will be allowed to 'settle' back down to a normal level and get a bit of rest from working so feverishly.