Epithelial, nerve, muscular, connective, and liquid are types of which body components?

• A. Organs
• B. Cells
• C. Tissues
• D. Systems

Answer: (C)

These are tissue types in the body. Tissues are groups of similar cells that work together to perform a specific function. Epithelial tissue lines surfaces and forms glands; nervous tissue transmits electrical impulses; muscular tissue contracts to produce movement; connective tissue supports, connects, and protects other tissues and organs. The term “liquid” refers to blood, which is a liquid connective tissue—the matrix is plasma, with suspended cells. Because these terms describe kinds of tissues rather than whole organs, single cells, or body systems, they identify tissue categories rather than any other level of organization. Organs are made of multiple tissue types, cells are the basic units, and systems are groups of organs working together.