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.
Your skin is an organ-it's made of multiple layers of epithelial tissue. Your heart is an organ-made up of epithelial, muscle, nervous, and connective tissues. Organs working together to perform a function are called an organ system. There are 10 major organ systems in your body. One is the digestive system.rgans, and organs work together to. make organ systems, which work. together to keep your body. functioning. The digestive system helps the body get the nutrients it needs from food. First, chemicals break food down into nutrients. then, nutrients are moved into the blood.