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.
Baby Boomers: 1946~1953 to 1964. This would make baby boomers, in the year 2010, somewhere in the ballpark of 46-64 years old. Gen X: 1965 to 1976~1982. This would make generation X, in the year 2010, somewhere in the ballpark of 28-45 years old. Gen Y: 1977~1982 to 1995~2001. This would make generation Y, in the year 2010, somewhere in the ballpark of 9-33 years old.