← Body Orginization Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All Cells are the smallest living things and are similar in size and shape. Connective Tissue helps keep organs from falling apart. Epithelial Tissue protects underlying tissue. Muscle Tissue made of cells that can contract and relax to produce movement. Nervous Tissue allows for rapid communication in your body.