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Multiple Choice
Which of the following structures is typically found in simple epithelial tissue?
A
A single layer of closely packed cells
B
Extensive blood vessels within the tissue
C
Multiple layers of keratinized cells
D
Thick bundles of collagen fibers
Verified step by step guidance
1
Understand the definition of simple epithelial tissue: Simple epithelial tissue is characterized by a single layer of cells that are closely packed together. This structure allows for efficient absorption, secretion, and filtration processes.
Eliminate options that contradict the definition: Extensive blood vessels within the tissue can be ruled out because epithelial tissues are avascular, meaning they lack blood vessels and rely on diffusion from underlying connective tissues for nutrients.
Consider the structural characteristics: Multiple layers of keratinized cells are found in stratified epithelial tissue, not simple epithelial tissue. Keratinized cells are typically associated with protective functions, such as in the skin.
Evaluate the presence of collagen fibers: Thick bundles of collagen fibers are characteristic of connective tissues, such as tendons and ligaments, not epithelial tissues.
Confirm the correct answer: A single layer of closely packed cells aligns with the definition and function of simple epithelial tissue, making it the correct choice.