Structure and Function of Arteries, Capillaries, and Veins. The walls of arteries and veins have three layers or tunics: 1  An outer layer (tunica adventitia) of connective tissue with collagen fibers. 2  A middle layer (tunica media) of circularly arranged smooth muscle and elastic fibers.
You might have heard that eating chocolate or greasy foods can cause acne, but these are both just myths. The truth is that food has little to do with breakouts. Acne occurs when the openings of hair follicles become blocked with oil secretions, dead skin cells and bacteria.
Dear Reader, Part of drinking responsibly is becoming familiar with the myths and facts about consuming alcohol. It is commonly believed that having milk or something greasy will coat the stomach and prevent you from getting drunk.ear Reader, Part of drinking responsibly is becoming familiar with the myths and facts about consuming alcohol. It is commonly believed that having milk or something greasy will coat the stomach and prevent you from getting drunk.