Explain why the skin is sometimes referred to as the integumentary system. (page 76)

The functions of the integumentary system include: 1. Protection: The integumentary system acts as a physical barrier to protect the body against environmental factors, such as harmful pathogens, chemicals, and physical damage. 2. Temperature regulation: It helps in maintaining the body's internal temperature by regulating heat exchange with the environment through processes such as sweating and vasodilation. 3. Sensation: The system contains sensory receptors that detect a wide range of stimuli, such as touch, pressure, temperature, pain, and vibration, which provide necessary information to the brain. 4. Excretion: The skin has sweat glands that help in the elimination of waste products from the body. 5. Vitamin D synthesis: The skin, when exposed to sunlight, facilitates the production of vitamin D, which is important for bone health. #tag_end# #3 Explain how the skin performs these functions#

The skin is sometimes referred to as the integumentary system because it is the principal organ involved in the various essential functions carried out by this system. As explained in the previous steps, the skin is responsible for protection, temperature regulation, sensory information reception, excretion, and vitamin D synthesis. As a result, the skin plays a crucial role in maintaining the body's overall health and well-being. The term "integumentary system" highlights the important roles the skin performs beyond its appearance. #tag_end#