You may be talking about the nephron or glomerulus.
When Jarin drank a lot of water before going to the doctor, it is possible that his blood pressure will be low. It is because drinking water helps lower blood pressure for it helps eliminate unwanted elements in the body that contributes to increasing a person's blood pressure.
A toxic biological substance or disease-causing organism that is hazardous to the health of people is a biohazard.
