Epidermis Overview

Front

What are the layers of the epidermis?

Back

The layers of the epidermis are the different strata that make up the outermost part of the skin.

Front

What are the cells of the epidermis?

Back

The cells of the epidermis include keratinocytes, melanocytes, Langerhans cells, and Merkel cells.

Front

What is the primary function of keratinocytes in the epidermis?

Back

Keratinocytes produce keratin, a protein that helps protect the skin and underlying tissues from heat, microbes, and chemicals.

Front

Where are melanocytes located within the epidermis?

Back

Melanocytes are primarily found in the basal layer (stratum basale) of the epidermis.

Front

What role do Langerhans cells play in the epidermis?

Back

Langerhans cells are involved in the immune response by detecting and presenting foreign substances to immune cells.

Front

What is the function of the stratum corneum in the epidermis?

Back

The stratum corneum acts as a barrier to protect underlying tissues from infection, dehydration, and mechanical stress.

Front

How do Merkel cells contribute to the function of the epidermis?

Back

Merkel cells are involved in the sensation of touch by acting as mechanoreceptors in the skin.

Front

What is the process of keratinization in the epidermis?

Back

Keratinization is the process by which keratinocytes mature, move towards the surface, and become filled with keratin, eventually forming the protective outer layer of the skin.

Front

What is the stratum basale and its significance in the epidermis?

Back

The stratum basale is the deepest layer of the epidermis, responsible for continuous cell division and production of new keratinocytes.

Front

How does the epidermis receive nutrients if it is avascular?

Back

The epidermis receives nutrients through diffusion from the underlying dermis, as it does not contain blood vessels.