NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,804 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

dermis
(DER-mis)
The inner layer of the two main layers of the skin. The dermis has connective tissue, blood vessels, oil and sweat glands, nerves, hair follicles, and other structures. It is made up of a thin upper layer called the papillary dermis, and a thick lower layer called the reticular dermis.

EnlargeSkin anatomy; drawing shows layers of the epidermis, dermis, and subcutaneous tissue including hair shafts and follicles, oil glands, lymph vessels, nerves, fatty tissue, veins, arteries, and a sweat gland.

Anatomy of the skin, showing the epidermis, dermis, and subcutaneous tissue.