Epidermis Overview Quiz

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<p>They die, flatten, and are filled with keratin (D)</p> Signup and view all the answers

<p>Every 35 to 45 days (A)</p> Signup and view all the answers

The outermost layer of skin; comprised of keratinized stratified squamous epithelium.

The most abundant cell type in the epidermis, responsible for producing keratin, a tough protein that provides protection.

A type of cell connection that holds keratinocytes tightly together, contributing to the skin's strength and integrity.

The process of keratinocytes continuously dividing and pushing older cells towards the surface, resulting in a new epidermis every 35–45 days.

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The increase in keratinocyte production and keratin formation in areas of the skin that experience friction.

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The epidermis is a keratinized stratified squamous epithelium.
It contains four main cell types: keratinocytes, melanocytes, tactile epithelial cells, and dendritic cells.
Keratinocytes are the most abundant cell type.

Produce keratin, a tough protein, providing protective properties.
Play a vital role in physical and mechanical protection.
Produce antibiotics and enzymes to detoxify harmful chemicals.
Tightly connected by numerous desmosomes.
Originate in the deepest epidermis through continuous mitosis.
As they move upwards, fill with keratin.
By the surface, they are dead, flat keratin sacs.
Millions of dead cells slough off daily, renewing the epidermis every 35-45 days.
Increased cell production and keratin formation in areas of high friction.