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Cross section of skin: organ that forms the outer covering of a human body.
Pores: minute holes from which sweat and sebum are secreted.
Hair shaft: a filament that grows from the skin.
Epidermis: outer layer of the skin. Shields underlying tissue.
Dermis or true skin: middle layer of the skin. Contains bundles of collagen, nerve fibers, blood vessels, sweat glands, sebaceous glands, and hair follicles.
Sebaceous gland: gland that secretes sebum, which lubricates the skin and hair.
Subcutaneous tissue: deep subcutaneous layer. Tissue lies just beneath the skin; contains blood vessels, nerves, lymph, and loose connective tissue filled with fat cells.