Answer: Epithelial tissue.
Explanation:
Epithelial tissue is one of the four basic types of tissues, along with nervous tissue, muscle tissue and connective tissue.
Epithelial tissues form the covering of all surfaces, line body cavities and hollow organs. Therefore they are widespread throughout the body.
This type of tissue serves several important functions, such as:
- Barrier: it prevents foreign materials from entering the body
- Protection: it protects structures or tissues deeper in the body.
- Sensation: Sensory nerve endings embedded in this tissue transmit sensations from the outside.
An example of epithelial tissue is the epidermis, which is the outermost layer of the skin. When Elaine fell off the bike, the most exposed tissue is the epithelium (skin) of her hands, and it's the tissue that was damaged.
