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Assertion: Deeper layers of stratified keratinized squamous epithelium contain deposits of the protein keratin.
Reason: The presence of keratin in this epithelium makes it impervious to water.
Both the assertion and reason are true, with the reason providing a correct explanation for the assertion.
Both the assertion and reason are true, but the reason does not adequately explain the assertion.
Assertion is true, but the reason is false.
Assertion is false, but the reason is true.
Answers (1)
The reason provided is correct. Keratin, a fibrous protein, is indeed present in the deeper layers of stratified keratinized squamous epithelium. Keratin plays a crucial role in providing strength, protection, and water resistance to the epithelium. However, the assertion that deeper layers of this epithelium contain deposits of keratin is incorrect.
In stratified keratinized squamous epithelium, the cells in the deeper layers actively produce keratin, which gradually accumulates as the cells move toward the surface. The cells in the superficial layers of the epithelium are fully keratinized, forming a tough and water-resistant outer layer. Therefore, the deposits of keratin are mainly observed in the superficial layers rather than the deeper layers of the epithelium.
As a result, the correct answer is option 4 which states that the Assertion is false, but the reason is true.
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