What structure is involved in the production of sebum?

Sebaceous glands are specialized structures within the skin responsible for the production and secretion of sebum, which is an oily substance that helps to lubricate and protect the skin and hair. Sebum plays a crucial role in maintaining skin hydration and creating a barrier to prevent water loss. These glands are typically associated with hair follicles, as their ducts open into the follicle, allowing sebum to be deposited on the skin's surface.

The other options, while related to skin and glandular functions, do not produce sebum. Salivary glands are involved in the production of saliva, which aids in digestion and oral health. Subcutaneous tissue primarily serves as a layer of fat that insulates the body and cushions underlying structures, but it does not produce sebum. Hair follicles are the structures from which hair grows, and while they do work closely with sebaceous glands, they themselves are not directly responsible for sebum production. Therefore, the sebaceous glands are the correct answer as they are specifically designed for this function.