Which part of the body does the integumentary system primarily protect?

The integumentary system primarily protects internal organs. This system includes the skin, hair, nails, and associated glands. The skin serves as the body’s first line of defense against environmental hazards such as pathogens, chemicals, and physical damage. By forming a barrier, the integumentary system plays a crucial role in preventing infections and injuries that could compromise the health of internal organs.

Other options represent different systems or structures that are not directly protected by the integumentary system. Muscle tissue and bone structure are important for movement and support, while the respiratory system has its own protective mechanisms, such as mucous membranes and cilia, to filter and defend against airborne irritants. Thus, the integumentary system’s primary function is aimed at safeguarding the internal organs from external threats.