Right-click the picture you want to change. Click Format Picture. In the Format Picture dialog box, click the Picture tab. Under Image control, click Washout in the Color list, and then click Recolor.
There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
All arteries except for the pulmonary artery carry oxygen rich blood. All veins except for the pulmonary vein carry oxygen poor blood. Generally, people think A for away from the heart for arteries.ll arteries except for the pulmonary artery carry oxygen rich blood. All veins except for the pulmonary vein carry oxygen poor blood. Generally, people think A for away from the heart for arteries.