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corneum

corneum

9.9
The outer layer of skin made of dead flat cells that fall off regularly
  • noun
  • /ˈkɔrniəm/
  • Specialized
translation icon : estrato córneo
  • The moisturizing cream has a smaller molecular volume than the emulsions, able to penetrate into the stratum corneum and moisturize dry cells.
  • stratum corneum

Examples

  • With a greater volume of stratum corneum, shear stress gradients are lower; thus, the skin is at lower risk of failure.

    Academic text (1995)
  • The cells at the basement membrane increase in size, density, and speed of transport across the epidermis, increasing the thickness of the stratum corneum layer.

    Academic text (1995)
  • The rate of migration of cells from the basement membrane to the stratum corneum was two to three times higher than in the control (59).

    Academic text (1995)
  • The thickened stratum corneum means that there is a greater volume through which to distribute the shear load between the skin surface and immediately above the basement membrane.

    Academic text (1995)
  • There is increased expression of cytokines in the skin in which the barrier function of the stratum corneum is impaired, but it remains to be seen if this finding can be extended to older people with pruritus.

    Academic text (1999)
  • Friction blisters generally occur only on the palms and soles where the overlying stratum corneum is thick enough to form a roof on the blister.

    Academic text (1995)
  • In response to repeated rubbing, the skin becomes red, there is slight flaking of the stratum corneum, and finally the epidermis ruptures suddenly, producing sharp pain and a crater in the skin.

    Academic text (1995)
  • As they migrate, cells die, lose their nuclei, and become more pancake-shaped with larger diameters but thinner cross sections, such that the surface area of a cell at the most external layer of the epidermis, the stratum corneum, is approximately 25 times that of one at the basement membrane.

    Academic text (1995)
  • The stratum corneum acts as a protective barrier for the underlying layers of skin.

  • In humans, the outermost layer of skin, known as the corneum, is composed of dead cells.

Synonyms

stratum corneum
vscorneum
  • Specialized
8.1

The outer layer of skin made of dead cells that are shed

is the common name for the same layer rather than the technical term
horny layer
vscorneum
  • Specialized
8.5

The outer layer of skin made of dead cells that fall off

is the standard scientific term rather than a colloquial or older label

Compounds

stratum corneum
  • Specialized
8.1

The outer layer of skin made of dead cells that are shed

How Mature

corneum
  • Specialized
9.9
keratinocyte
  • Specialized
1 9.4
stratum basale
  • Specialized
8.7

Surface Forms

corneum singular
cornea plural

Etymology

Corneum comes from the Latin word cornu meaning 'horn', via corneus meaning 'horn-like'. That's why the stratum corneum is the tough outer skin layer made of dead, flat cells, acting like a protective 'horn' that keeps water in and germs out.