What us the skinny long tube called, at the lower top, in the back inside the large intestines

Answer 1

The skinny long tube you're referring to at the lower top in the back inside the large intestine is likely the appendix. The appendix is a small, tube-like structure that extends from the cecum, which is the first part of the large intestine. It is located in the lower right abdomen. The function of the appendix is not entirely understood, but it is believed to play a role in gut flora and immune function. If you have a different structure in mind, please clarify!