Aspartame was first approved in the United States in 1981 and is one of the most widely used artificial sweeteners. When metabolized by the body, aspartame is broken down into two common amino acids, aspartic acid and phenylalanine, and a third substance, methanol.
Plasma is the liquid part of the blood. Arteries are blood vessels that carry oxygen rich blood away from the heart. Capillaries are tiny blood vessels that connect arteries to veins. Nutrients, oxygen and wastes pass in and out of your blood through the capillary walls.Veins carry blood back toward your heart.rteries are blood vessels that carry oxygen rich blood away from the heart. Capillaries are tiny blood vessels that connect arteries to veins. Nutrients, oxygen and wastes pass in and out of your blood through the capillary walls. Veins carry blood back toward your heart.
Arteries carry blood low in oxygen from the right side of the heart to the lungs to be oxygenated. Blood high in oxygen enters the left side of the heart in the pulmonary vein and is pumped into the systemic circuit. The pulmonary arteries and veins are unique in the type of blood they carry.1  Pulmonary arteries carry blood low in oxygen from the right side of the heart to the lungs and often contain blue latex. 2  Pulmonary veins carry blood rich in oxygen to the left side of the heart and rarely contain any latex.he systemic circuit and the pulmonary circuit. Both circuits have arteries which lead away from the heart capillaries which connect arteries to veins and veins which carry blood toward the heart. In the systemic circuit arteries carry blood rich in oxygen from the left side of the heart toward the extremities.