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.
The average generation from Abraham to David (Matt. 1:17) was approximately 64 years, while the average generation for the other two groups was 38 years. The time span covered by each generation is not the emphasis, but rather the fact of the passing of the number of successive generations.