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.
Confidence votes 84.9K. The 11 major organ systems and their main functions are: 1)The integumentary system supports and protects, regulates body temperature, makes chemicals and hormones, and acts as a sense organ. 2)The skeletal system supports and protects, makes movement easier (with joints and muscles), stores minerals and makes blood cells in the marrow.