Kaplan Nursing Entrance Practice Exam

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Study for the Kaplan Nursing Entrance Exam. Dive into questions with detailed explanations and hints to enhance your understanding. Prepare strategically for a successful exam experience!

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What is the role of melanocytes in the skin?

Synthesize collagen
Producing keratin
Synthesize the pigment melanin
Regulate body temperature

The correct answer is: Synthesize the pigment melanin

Melanocytes are specialized cells located primarily in the basal layer of the epidermis, and their primary role is to synthesize the pigment melanin. Melanin is responsible for the color of the skin, hair, and eyes and plays a critical role in protecting the skin from the harmful effects of ultraviolet (UV) radiation by absorbing it and reducing the risk of DNA damage that can lead to skin cancer. The amount and type of melanin produced by melanocytes can vary significantly among individuals, influencing their skin tone and susceptibility to UV damage. The other options refer to functions that are associated with different types of cells within the skin. For example, collagen is synthesized by fibroblasts, which are located in the dermis and provide structural support to the skin. Keratin, a key structural protein that provides strength and waterproofing to the skin, is produced by keratinocytes. Additionally, the regulation of body temperature is primarily managed by sweat glands and blood vessels rather than melanocytes. This distinction highlights the specific and essential role that melanocytes play in pigmentation and UV protection.