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.
Additional views for the life span of man (i.e., the length of a generation) include 100, 80, 70, 60, 50, and 20 years. A more recent theory divides the 2166 years from Abrahams birth to the birth of Christ by the 42 generations listed in Matthew chapter 1 to give a generation length of 51.57 years.