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.
Avoid eating or drinking the folâlowing items that may make GER or GERD worse: â 1 chocolate. 2  coffee. 3  peppermint. 4  greasy or spicy foodsâ. 5  tomatoes and tomato products. 6  alcoholic drinks.