23 Questions
What is the function of melanin in the skin?
To protect the skin from the harmful effects of ultraviolet light
What is the primary site of keratinocyte formation in the skin?
Stratum basale
What is the proportion of melanocytes in the stratum basale?
One in every six cells
What is the relationship between melanin production and skin color?
The more melanin produced, the darker the skin
What is the function of the projections of melanocytes?
To transfer melanin granules to keratinocytes
Which of the following layers is responsible for shedding dead keratinocytes?
Stratum corneum
What is the primary function of Langerhans cells in the epidermal layer?
To function in the immune response
Which type of heat transfer involves the transfer of heat between a warmer object and a cooler one without any direct contact?
Radiation
What is the term for the process of cell division where the parent cell replicates to produce two daughter cells that are genetically identical to the parent?
Mitosis
What is the layer of tissue that attaches the skin to underlying bone and muscle?
Hypodermis
What type of cells are responsible for producing melanin, the pigment responsible for skin color?
Melanocytes
What is the term for the proteinaceous fibers found in epithelial cells that provide structural support?
Tonofilaments
What is the primary source of food for house dust mites that trigger asthma in susceptible individuals?
Dead skin cells
What is the outermost layer of the skin that is at risk of considerable wear and tear?
Stratum corneum
What is the result of constant friction on a part of the skin?
Callus formation
What is the function of rete ridges in the skin?
To anchor the dermis to the epidermis
What is the result of shearing forces or friction on the skin layers?
Blister formation
What is the layer of the skin that contains lymph vessels, nerve endings, hair follicles, and glands?
Dermis
What percentage of your physical weight is made up of your skin?
16%
What would be the approximate area of your skin if it were laid out flat?
1.7 square meters
What is the name of the system that the skin is a part of?
Integumentary system
What type of professionals are involved in creating TED-Ed Animations?
Educators and animators
What can educators or animators interested in creating a TED-Ed Animation do?
Nominate themselves
Learn about the layers of the epidermis, the role of melanocytes in producing melanin, and the importance of balance in skin cell formation and shedding. This quiz covers the basics of skin anatomy and physiology.
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