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Which type of epithelial tissue lines the trachea in the respiratory system?
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4. Tissues & Histology
Introduction to Epithelial Tissue
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Which epithelial tissue type consists of a single layer of flat cells and is specialized for diffusion and filtration?
A
Stratified squamous epithelium
B
Transitional epithelium
C
Simple squamous epithelium
D
Simple cuboidal epithelium
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Understand the function of the tissue types mentioned in the problem. Simple squamous epithelium is specialized for diffusion and filtration due to its thin, flat structure, which allows substances to pass through easily.
Recall the structural characteristics of simple squamous epithelium. It consists of a single layer of flat cells, making it ideal for processes like gas exchange in the lungs or filtration in the kidneys.
Compare the other epithelial tissue types mentioned: Stratified squamous epithelium is composed of multiple layers and is designed for protection, not diffusion or filtration. Transitional epithelium is specialized for stretching, found in areas like the bladder. Simple cuboidal epithelium is a single layer of cube-shaped cells, often involved in secretion and absorption.
Identify the key feature that makes simple squamous epithelium the correct answer: its single layer of flat cells is uniquely suited for diffusion and filtration, unlike the other tissue types listed.
Conclude that simple squamous epithelium is the correct answer based on its structure and function, which align with the processes of diffusion and filtration.
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