dermis
Definition
- Noun:
- The deep vascular inner layer of the skin: The dermis is the thick layer of living tissue below the epidermis (the outer layer). It contains blood vessels, nerve endings, sweat glands, and hair follicles.
Usage
- The dermis provides structural support and elasticity to the skin.
- Injuries that penetrate the dermis often bleed and may scar.
- Collagen and elastin fibers within the dermis are responsible for skin strength and flexibility.
Examples
Advanced Usage
- "Dermal" (adjective): Pertaining to the dermis.
- Dermal fillers are injected into the dermis to reduce the appearance of wrinkles.
- In medical terminology, the dermis is often discussed in contrast to the epidermis and hypodermis (subcutaneous layer).
Variants and Related Words
- Dermal (adj): Of or relating to the dermis.
- Dermatology (n): The branch of medicine concerned with the skin and its diseases. (Note: This is a related but broader term).
- Corium (n): A technical synonym for the dermis, used primarily in biological and medical contexts.
Synonyms
- Corium: The deep layer of the skin.
- Cutis vera: Another technical term for the true skin, i.e., the dermis.
Word Formation Notes
- The word dermis comes from the Greek , meaning "skin." It is a root for many English words related to skin.
- The prefix epi- (meaning "upon") combined with forms epidermis (the outer layer upon the dermis).
- The prefix hypo- (meaning "under") combined with forms hypodermis (the layer under the dermis).
Common Contexts
- Used in fields of anatomy, medicine, dermatology, and biology.
- Frequently appears in discussions about skin anatomy, wound healing, aging, cosmetic procedures, and skin diseases.
Noun
-
the deep vascular inner layer of the skin
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