The mucous membranes that are lined by simple epithelia perform the functions of __________.

• A. support and movement
• B. absorption and secretion
• C. generation of electrical impulses
• D. protection against abrasion

Answer: (B)

Verified step by step guidance

1. Understand the structure and function of mucous membranes: Mucous membranes are epithelial tissues that line body cavities and hollow organs exposed to the external environment, such as the respiratory, digestive, and urogenital tracts. They are typically moist due to the secretion of mucus.
2. Identify the type of epithelium mentioned: Simple epithelia consist of a single layer of cells, which makes them specialized for processes like absorption and secretion rather than protection against abrasion or mechanical stress.
3. Analyze the functions of simple epithelia: Simple epithelia are thin and allow for efficient exchange of substances, such as nutrients, gases, and secretions. This makes them ideal for absorption (taking in substances) and secretion (releasing substances like mucus).
4. Eliminate incorrect options: Support and movement are functions of connective tissues and muscles, not simple epithelia. Generation of electrical impulses is a function of nervous tissue, not epithelial tissue. Protection against abrasion is typically performed by stratified epithelia, not simple epithelia.
5. Conclude the correct answer: Based on the structure and function of simple epithelia, the mucous membranes lined by these tissues perform absorption and secretion as their primary functions.