Appendicitis occurs when the appendix becomes blocked, often by stool, a foreign body, or cancer. Blockage may also occur from infection, since the appendix swells in response to any infection in the body.
A familial generation is a group of living beings constituting a single step in the line of descent from an ancestor. In developed nations the average familial generation length is in the high 20s and has even reached 30 years in some nations.
In Australia, a 2005 report from the McCrindle Research Center used 2001 as the starting point of this generation's birth years. A later McCrindle report in 2009 gave a range of 1995-2009, starting with a recorded rise in birth rates, and fitting their newer definition of a generational span as 15 years.