High blood glucose, also called blood sugar, can harm your baby during the first weeks of pregnancy, even before you know you are pregnant. If you have diabetes and are already pregnant, see your doctor as soon as possible to make a plan to manage your diabetes.
These are the only veins in the body that carry fresh, oxygenated blood. Blood leaves the heart from the left ventricle through the artery called the aorta. The aorta has several branches into other arteries that are carrying blood away from the heart and to the body tissues.
All parts of your body need blood. The movement of blood through your heart and around your body is called circulation. When blood leaves your heart, it moves through tubes called blood vessels. There are three types of blood vessels: arteries, veins, and capillaries. Arteries carry blood away from the heart to other parts of your body.