Crossword clues for epidermis
epidermis
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Periostracum \Per`i*os"tra*cum\, n.; pl. Periostraca. [NL., fr. Gr. ? around + ? shell of a testacean.] (Zo["o]l.) A chitinous membrane covering the exterior of many shells; -- called also epidermis.
Douglas Harper's Etymology Dictionary
Wiktionary
n. 1 The outer, protective layer of the skin of vertebrates, covering the dermis 2 The similar outer layer of cells in invertebrates and plants
WordNet
n. the outer layer of the skin covering the exterior body surface of vertebrates [syn: cuticle]
Wikipedia
The epidermis is the outer (epi in Greek meaning "over" or "upon") of the two layers that make up the skin (or cutis), the inner layer being the dermis. It provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss (TEWL). The outermost part of the epidermis is composed of a stratified layer of flattened cells, that overly a basal layer ( stratum basale) composed of columnar cells arranged perpendicularly.
In humans, it is thinnest on the eyelids at and thickest on the palms and soles at . It is ectodermal in origin.
The epidermis cells (from the Greek "επίδερμίδα", meaning "over-skin") is a single-layer of cells that covers the leaves, flowers, roots and stems of plants. It forms a boundary between the plant and the external environment. The epidermis serves several functions, it protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients. The epidermis of most leaves shows dorsoventral anatomy: the upper (adaxial) and lower (abaxial) surfaces have somewhat different construction and may serve different functions. Woody stems and some other stem structures produce a secondary covering called the periderm that replaces the epidermis as the protective covering.
Epidermis may refer to:
- Epidermis (botany), the outermost cell layer of plants
- Epidermis (skin), the outermost layer of the skin of a human or other vertebrate animal
- Epidermis (zoology), the sheet of cells that covers the body of all animals more complex than sponges
In zoology, the epidermis is an epithelium (sheet of cells) that covers the body of an eumetazoan ( animal more complex than a sponge). Eumetazoa have a cavity lined with a similar epithelium, the gastrodermis, which forms a boundary with the epidermis at the mouth.
Sponges have no epithelium, and therefore no epidermis or gastrodermis. The epidermis of a more complex invertebrate is just one layer deep, and may be protected by a non-cellular cuticle. The epidermis of a higher vertebrate has many layers, and the outer layers are reinforced with keratin and then die.
Usage examples of "epidermis".
According to Crocker it begins in the second or third week of life, and occasionally as late as the fifth week, with diffuse and universal scaling, which may be branny or in laminae like pityriasis rubra, and either dry or with suffusion beneath the epidermis.
The epidermis, which is the outer part, the dermis underneath, the subcutis, the layer of fat below that.
Only the tough subdermal cartilage sheath had kept the epidermis from dissolving from the inside out, but that was beginning to liquefy, too.
Spanky bent forward with an agonised shout and the epidermis split further apart across his back.
As his epidermis dripped from the sides of his face, the cannie did a shivery, heel-drumming, horizontal dance in the gutter.
Everything is given some pronounced epidermis, something that comes back at you, and it was starting to get to me.
Once healing had concluded beneath, the artificial epidermis would dry, crack, and flake off, leaving the restored flesh exposed.
No algae symbionts in the epidermis, so they were constantly eating and excreting through a hypertrophied gastrointestinal tract —.
One subject had grown a big genital wart all over her epidermis, distressing to observe, but they’.
The tips of the hyphae touched their damp feet and began to feed on the dead outer layer of the epidermis.
There was some discussion among the more knowledgeable onlookers of nanocarbon tubes embedded in a bonding ceramic or glass matrix, but the dullish appearance of the intruder’s matte epidermis provided little in the way of support or rebuttal for such theory.
Based on organic nanotechnology, the transponder was a nonharmful radioactive chemical that bound itself to an individual's glucose and the middle layers of the epidermis.
The transponder was a nonharmful radioactive chemical that bound itself to the glucose in the blood and a middle layer of epidermis.
The new skin would bond properly, assimilating and overgrowing what original epidermis remained, leaving undetectable the restoration.
By now, the tiny spines on the epidermis of the pahoehoe flow had wreaked a spiteful damage on the soles of her boots.