Podcast
Questions and Answers
Which layer of the epidermis is responsible for providing a protective barrier against water loss and external pathogens?
Which layer of the epidermis is responsible for providing a protective barrier against water loss and external pathogens?
- Stratum corneum (correct)
- Stratum spinosum
- Stratum basale
- Stratum granulosum
What is the primary function of the stratum granulosum layer of the epidermis?
What is the primary function of the stratum granulosum layer of the epidermis?
- Melanin synthesis and distribution
- Cell division and proliferation
- Lipid secretion and waterproofing
- Keratin production and deposition (correct)
Which cell type is responsible for the continuous renewal of the epidermis?
Which cell type is responsible for the continuous renewal of the epidermis?
- Merkel cells
- Melanocytes
- Langerhans cells
- Keratinocytes (correct)
What is the role of the stratum lucidum in the epidermis?
What is the role of the stratum lucidum in the epidermis?
Which layer of the epidermis is responsible for the production and storage of keratohyalin granules?
Which layer of the epidermis is responsible for the production and storage of keratohyalin granules?
Which layer of the epidermis is the outermost layer and primarily composed of dead, keratinized cells?
Which layer of the epidermis is the outermost layer and primarily composed of dead, keratinized cells?
In which layer of the epidermis do keratinocytes accumulate keratohyalin granules and begin the process of cornification?
In which layer of the epidermis do keratinocytes accumulate keratohyalin granules and begin the process of cornification?
Which layer of the epidermis is present only in thick skin, such as on the palms and soles, and appears as a clear layer?
Which layer of the epidermis is present only in thick skin, such as on the palms and soles, and appears as a clear layer?
Which of the following is NOT a function of keratinocytes in the epidermis?
Which of the following is NOT a function of keratinocytes in the epidermis?
Which layer of the epidermis is the deepest layer, containing stem cells that continuously divide to replenish the upper layers?
Which layer of the epidermis is the deepest layer, containing stem cells that continuously divide to replenish the upper layers?
