QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Which of the following statements about epithelial tissue is false?
Epithelial tissues are avascular.
Epithelial tissues consist of few cells and an extensive ECM.
The ECM of epithelial tissues is located in the basal lamina.
Epithelial tissues are our covering and lining tissues.
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Answer
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Step 1:I'll solve this biology problem step by step:
Step 2:: Analyze the characteristics of epithelial tissue
To determine which statement is false, I'll evaluate each statement against established biological knowledge about epithelial tissue.
Step 3:: Evaluate Statement 1 - "Epithelial tissues are avascular"
- This statement is TRUE - Epithelial tissues have no direct blood supply (no blood vessels penetrate the tissue) - They receive nutrients by diffusion from underlying connective tissue
Step 4:: Evaluate Statement 2 - "Epithelial tissues consist of few cells and an extensive ECM"
- This statement is FALSE - Epithelial tissues actually consist of MANY closely packed cells - They have a MINIMAL extracellular matrix (ECM), not an extensive one - Cells are tightly arranged with little space between them
Step 5:: Evaluate Statement 3 - "The ECM of epithelial tissues is located in the basal lamina"
- This statement is TRUE - The basal lamina is a thin layer of extracellular matrix beneath the epithelial layer - It helps anchor the epithelium to underlying connective tissue
Step 6:: Evaluate Statement 4 - "Epithelial tissues are our covering and lining tissues"
- This statement is TRUE - Epithelial tissues cover body surfaces and line internal cavities - Examples include skin, lung alveoli, and intestinal lining
Final Answer
Epithelial tissues consist of many tightly packed cells, not few cells, and have a minimal rather than extensive extracellular matrix.
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