What does the integument refer to?

The integument refers to the outer covering of an organism. This term is most often used in biology to describe the skin of animals, including humans.

Here's a breakdown:

* In animals: The integument is the largest organ system and includes the skin, hair, nails, feathers, scales, and glands. It acts as a barrier to protect the body from the environment, regulate temperature, and sense the outside world.

* In plants: The integument refers to the outer layers of a seed that enclose and protect the embryo.

So, while the term "integument" can refer to the outer covering of both plants and animals, it's most commonly used to describe animal skin and its associated structures.