sentence: Muscles are made of many muscle cells.
sentences_after: The cells contract together to make the muscle get shorter. The muscle cells know to do this together because many of them get information sent to them by nerves. Then cells that get the message from nerves tell other cells that are near them. They tell the other cells by sending an electrical current.
concept_name: muscle
headings: Muscle Muscle Structure
categories: Basic English 850 words Tissues