The integumentary system is responsible for protecting the body through the protective layer of skin.

Here's why:

* Skin as the first line of defense: The skin is the body's largest organ and acts as a barrier against external threats like bacteria, viruses, and physical damage.

* Components of the integumentary system: This system includes the skin, hair, nails, and glands. These structures all contribute to protection.

* Other functions: The integumentary system also plays a role in temperature regulation, sensation, and vitamin D production.

Let me know if you have any more questions!