Mark the following statements as true or false. If a statement is false, correct it to make a true statement.


b. Epithelial tissues function in protection, immune defenses, secretion, transport, and sensation.

Verified step by step guidance

1. Identify the main functions of epithelial tissues in the body.
2. Review the provided statement to see if it includes all the main functions of epithelial tissues.
3. Compare the functions listed in the statement with the known functions: protection, immune defenses, secretion, transport, and sensation.
4. Determine if any function is missing or incorrectly stated in the provided statement.
5. Conclude whether the statement is true or false based on the comparison and make necessary corrections if false.

Key Concepts

Epithelial Tissue Functions

Epithelial tissues serve several critical functions in the body, including protection against mechanical injury, pathogens, and dehydration. They also play roles in secretion, such as producing mucus and hormones, and absorption, facilitating the transport of substances. Additionally, epithelial tissues are involved in sensation, containing specialized cells that respond to stimuli.

Types of Epithelial Tissue

Epithelial tissues are classified into various types based on cell shape and arrangement. The main types include simple (single layer) and stratified (multiple layers) epithelium, as well as squamous (flat), cuboidal (cube-shaped), and columnar (tall and column-like) cells. Each type is adapted to specific functions, such as diffusion, filtration, or secretion.

Immune Defense in Epithelial Tissue

Epithelial tissues contribute to immune defense by acting as a physical barrier to pathogens and by housing immune cells, such as Langerhans cells in the skin. These cells can detect and respond to foreign invaders, initiating immune responses. This function is crucial for maintaining overall health and preventing infections.