Which layer of skin is known as the "true skin" and contains various structures like sweat and oil glands?

The dermis is referred to as the "true skin" because it is the layer of skin that provides strength and elasticity through its connective tissue. This layer houses essential structures such as blood vessels, nerves, sweat glands, oil (sebaceous) glands, hair follicles, and other important components that contribute to the skin's function and overall health. The dermis plays a critical role in temperature regulation, sensation, and providing nutrients to the epidermis, the outer layer of skin.

In contrast to the dermis, the epidermis is the outermost layer that primarily provides a protective barrier but lacks the complex structures found in the dermis. The hypodermis, which lies beneath the dermis, serves mainly as a fat storage layer and helps insulate the body, while the subcutaneous layer is often intertwined with the hypodermis and focuses on fatty tissue and connective structures. Therefore, the dermis is characterized by its diverse functionality and is essential for maintaining the skin's integrity and health.