Final answer:
The epithelial tissue covers exposed surfaces and lines internal passageways and body cavities, and exists in various forms throughout the human body. It should not be confused with muscle tissue, which is responsible for movement.
Step-by-step explanation:
The type of tissue that covers exposed surfaces, lines internal passageways, and body cavities is the epithelial tissue, also known as epithelium. This tissue forms large sheets of cells that serve as barriers, controlling the movement of materials across their surfaces.
Epithelial tissue is not only found on the skin but also lines the airways, digestive tract, urinary, and reproductive systems. Body cavities and hollow organs that are not exposed to the outside, such as blood vessels and serous membranes, are lined by a specific type of epithelial tissue called endothelium. In contrast, muscle tissue is known for its ability to contract and provide movement but does not line surfaces or cavities.
Connective tissue plays a different role, binding the cells and organs of the body together and providing support and protection. Membranes such as the mucosa or serous membranes are examples of tissue membranes that include an epithelial layer and serve the functions of covering and lining different parts of the body.