Vasopressin has three main effects: 1  Increasing the water permeability of distal convoluted tubule and collecting duct cells in the kidney, thus allowing water reabsorption and excretion of more concentrated urine, i.e., antidiuresis.
It can be caused by damage to the vagus nerve, which regulates the digestive system. A damaged vagus nerve prevents the muscles in the stomach and intestine from functioning, preventing food from moving through the digestive system properly. Often, the cause of gastroparesis is unknown.
Your stomach rumbles to signal to you that it is empty and needs food. According to gastroenterologist Michael F. Picco of the Mayo Clinic, your digestive system releases hormone-like substances to tell your brain it is time to eat.our brain sends the message to your stomach and intestines, which releases acids that can cause your stomach to rumble. So, a rumbling stomach is often just a hunger sign and not indicative of a problem.