When you apply the brakes, brake fluid is forced under pressure into the wheel cylinder, which in turn pushes the brake shoes into contact with the machined surface on the inside of the drum. When the pressure is released, return springs pull the shoes back to their rest position.
Normally, protein is not removed when the kidneys filter waste from the blood. However, when the kidneys are damaged, protein leaks through the damaged filters and is removed from the body in the urine, along with the waste products.
When kidneys start shutting down, your diet may need to have a change. Because kidneys are responsible for filtering metabolic waste from the body. Improper diet can produce a lot of metabolic waste so as to increase the workload of kidneys. Therefore, for kidney failure patients, they can not enjoy whatever they like.