Traditionally, invitations go out six to eight weeks before the wedding -- that gives guests plenty of time to clear their schedules and make travel arrangements if they don't live in town. If it's a destination wedding, give guests more time and send them out three months ahead of time.
The human body is made up of several organ systems that all work together as a unit to make sure the body keeps functioning. There are ten major organ systems in the body, each of which plays a different role in helping the body work. This system is made up of the heart, blood, blood vessels, and lymphatics.
ORGAN SYSTEM MAJOR ORGANS/PARTS FUNCTIONS 6. Cardiovascular (Circulatory) System Heart, blood, and blood vessels (arteries, veins, and capillaries) Carries nutrient-rich and oxygen-rich blood to the cells of the body; oxygen is used in the cells for burning the food and producing heat and energy Carries away wastes from cells and brings them to organs that remove them from the body Returns used blood for replenishment Carries germ-fighting blood cells 7. Digestive System