What is a primary function of the skin?

The primary function of the skin includes both temperature sensing and protection from pathogens, making the selection of both functions as correct. The skin acts as a sensory organ, containing numerous receptors that detect temperature, pressure, pain, and touch, which contribute to the body's ability to respond to environmental changes.

Additionally, the skin serves as a barrier against external threats, including pathogens, chemicals, and physical injuries. It is the first line of defense in the immune response, providing protection through its physical structure and by housing immune cells that identify and respond to infectious agents. These dual roles are crucial for maintaining homeostasis and overall health, illustrating the skin's importance beyond merely serving as a covering for the body. Thus, recognizing both functions acknowledges the multifaceted role of the skin in human physiology.