1 The right side of the heart receives oxygen-poor blood from body tissues and pumps it to the lungs where it picks up oxygen and gets rid of carbon dioxide. 2  The blood vessels that carry blood to and from the lungs form the pulmonary circuit.
According to the Dietary Guidelines for Americans 2015-2020, a healthy eating plan: 1  Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products. 2  Includes lean meats, poultry, fish, beans, eggs, and nuts. 3  Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.
Healthy eating is about getting the correct amount of nutrients â protein, fat, carbohydrates, vitamins and minerals you need to maintain good health. Foods that contain the same type of nutrients are grouped together on each of the shelves of the Food Pyramid. This gives you a choice of different foods from which to choose a healthy diet. Following the Food Pyramid as a guide will help you get the right balance of nutritious foods within your calorie range.