The heart and the circulatory system make up the cardiovascular system. The heart works as a pump that pushes blood to the organs, tissues, and cells of the body. Blood delivers oxygen and nutrients to every cell and removes carbon dioxide and waste products made by those cells. Blood is carried from the heart to the rest of the body through a complex network of arteries, arterioles, and capillaries. Blood is returned to the heart through venules and veins. Many of vessels are smaller than a hair and only allow one blood cell at a time to circulate. If all the vessels of this network were laid end to end, they would extend for about 60,000 miles (more than 96,500 kilometers), which is far enough to circle the planet more than twice!
In pulmonary circulation, the roles are reversed. The pulmonary artery brings oxygen-poor blood into the lungs, and the pulmonary vein sends oxygen-rich blood back to the heart.
How Essential Oils Work with the Cardiovascular System
The oxygen and nutrient-rich blood that bring life and health to all the cells and tissues of the body, also transport essential oils. When applied topically, essential oils are absorbed through the skin. They move through the circulatory system within thirty seconds, and are then able to permeate cells and tissues throughout the body for targeted support within 14 to 20 minutes.