Prevention of kidney stones may include a combination of lifestyle changes and medications. Lifestyle changes. You may reduce your risk of kidney stones if you: Drink water throughout the day. For people with a history of kidney stones, doctors usually recommend passing about 2.6 quarts (2.5 liters) of urine a day.
Melanin is the pigment that gives your skin its color, and it is produced in specialized skin cells called melanocytes. The darker your skin is, the more melanin these cells produce. They can be found deep in the epidermis, close to the basement membrane.
3) Secretion: in some parts of the body epi. tissue is specialized to secrete certain products. E.g. small intestine: some cells are specialized to secrete mucus. 4) Excretion: in the kidney cells rid the body of materials. 5) Surface transport: cilia on cells in the lungs move mucus and particles up and out. 6) Sensory functions: Ex. taste buds in the mouth.