What types of structures are contained within the dermis?

The dermis is a critical layer of skin that lies beneath the epidermis and is composed of dense connective tissue. It contains a variety of structures essential for the skin's function and overall health. The correct option highlights that the dermis houses the blood supply, lymphatic capillaries, and various glands, such as sweat glands and sebaceous glands.

The presence of blood supply in the dermis is vital as it provides nutrients to the skin and facilitates the removal of waste products. Lymphatic capillaries play an important role in the immune response and fluid balance. Additionally, the glands located in the dermis have significant roles; for instance, sweat glands help in thermoregulation, and sebaceous glands produce oil that helps maintain skin hydration and barrier function.

Understanding these structures and their functions highlights the dermis's importance in maintaining skin homeostasis and responding to environmental changes. This depth of understanding is crucial for studying anatomy and physiology, especially in the context of skin health and pathology.