With your USB stick connected to your computer, create a folder in the root directory named 'music'. Once you've done this, copy your audio into that folder, and wait for the transfer to complete. When it's done, remove your USB stick from your computer, and plug it into your PS4. 3.
(2) stimulates the release of renin, which restricts losses of water and salt in the urine through reabsorption at the nephron. The main purpose of the kidneys is to separate urea, mineral salts, toxins, and other waste products from the blood. In addition, the kidneys also conserve water, salts, and electrolytes.
Summary. 1  Kidneys are a special filter system for your body. 2  Kidneys remove waste products from the blood and produce urine. 3  Kidneys control the levels of many substances in the blood.  Early detection of kidney disease can be life saving.