You are given a sentence and your task is to generate another sentence that supports the given input.

All living cells have a plasma membrane that encloses their contents.
All types of cells are enclosed by a membrane.

An electrical circuit is a network consisting of a closed loop, giving a return path for the current.
Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms a closed loop.

A thin device that can be inserted into the body through natural openings or through a very small incision in the skin, an endoscope is used by physicians for imaging inside the body and for performing diagnostic and surgical procedures without having to make large-scale incisions.

Endoscopes are used to explore the body through various orifices or minor incisions.