Health-related problems like dry skin and skin cancer belong to which system?

The integumentary system is the correct focus when discussing health-related problems like dry skin and skin cancer. This system encompasses the skin, hair, nails, and associated glands, playing a crucial role in protecting the body, regulating temperature, and providing sensory information.

Dry skin, often characterized by a lack of moisture and potential irritation, is a common condition that falls under the integumentary system's purview as it directly involves the skin's health and function. Similarly, skin cancer arises from changes in skin cells, often as a result of excessive sun exposure or other environmental factors, emphasizing the importance of the integumentary system in maintaining the body's overall health.

Understanding these conditions within the context of the integumentary system highlights its critical role in both physical protection and health maintenance, aligning perfectly with the examples provided in the question.