Wisconsin Esthetics State Board Practice Test

What type of tissue covers and protects body surfaces and internal organs?

1. Epithelial tissue

2. Connective tissue

3. Muscular tissue

4. Nerve tissue

The correct answer is: Epithelial tissue

Epithelial tissue serves the essential function of covering and protecting both external and internal body surfaces. This type of tissue is characterized by closely packed cells with minimal extracellular matrix, forming continuous sheets. These sheets can be found on the skin's surface, lining body cavities and organs, and making up glands. Epithelial tissue acts as a barrier between the body and the external environment, providing protection against pathogens, physical trauma, and dehydration. Additionally, it plays a role in absorption, secretion, and sensation depending on its specific location and type. For example, the skin consists of stratified squamous epithelial tissue, which is suited for protection, while the epithelium in the intestines is specialized for absorption. Other types of tissue, such as connective, muscular, and nerve tissue, have distinct functions that do not primarily focus on covering and protecting surfaces. Connective tissue supports and binds other tissues and organs, muscular tissue is responsible for movement, and nerve tissue facilitates communication throughout the body.