What is the Appendix?
By Susha Cheriyedath, MSc
The appendix or vermiform appendix is a muscular structure attached to the large intestine in the human body. It is a narrow tube resembling a worm and is named after the Latin word "vermiform" which means ‘worm-shaped’. The appendix extends from the lower end of the cecum, a pouch-like structure in the large intestine.
The diameter of the appendix usually ranges from 7 to 8 mm and its length ranges between 2 and 20 cm, with an average length of 9 cm. The appendix is usually located at the lower right side of the abdomen. In people with a rare condition called situs inversus, it can be found at the lower left quadrant of the abdomen. The appendix is made of inner mucosa layer just like the rest of the digestive tract and is also known as the vermix or the cecal appendix.
https://www.news-medical.net/health/What-is-the-Appendix.aspx
