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.
If you have a can of cola with your peanuts, your soft drink will be responsible for making your blood sugar levels peak. However, if you only have peanuts and do not control your serving size and keep eating handfuls after handfuls of peanuts, you could end up eating a significant amount of carbohydrates.