Outermost layer of skin (aka epidermis) or the fold of skin at the base of the fingernail. Hair cuticles are the outermost layer of the hair shaft which overlap like shingles. When healthy and lying flat, these cuticles impart sheen to the hair.
In animals, a multilayered, extracellular, external body covering, usually composed of fibrous molecules such as chitin or collagen, and sometimes strengthened by the deposition of minerals such as calcium carbonate.
In the gut of arthropods, a lining secreted by epithelial cells of the foregut, or hindgut that consists of chitinous and non-chitinous materials. Also refers to the outer layers of nematode bodies and to the exoskeleton of arthropods.
(1) In plants, a waxy, clear, non-living covering on the surface of stems and leaves which reduces desiccation and provides protection. (2) In arthropods, the exoskeleton, consisting of layers of protein and chitin, that reduces disiccation in terrestrial forms.
The cuticle is a thin layer of waxy material composed of cutin that is secreted by the epidermal cells. All cells in the epidermis contain this, even the guard cells. It makes the cells water proof and protects the stem from loss of water and invasion by fungal spores, insects, and bacteria. DIAGRAMS: Leaf Cross-section / Hydathode PHOTOS: 1-Year Tilia Stem 6-Year Tilia Stem 1 / 6-Year Tilia Stem 2
the continuous layer of cutin secreted by the epidermis, it prevents plant desiccation by being impervious to water and gas exchange and covers the aerial parts of the plant body, broken only by stomata and lenticels.
The outer layer of cells of a fiber which are hard, flattened and do not fit together evenly and whose tips point away from the fiber shaft forming serrated edges. These serrated edges cause the fibers to grip together during processing and manufacturing. See also Scales
Noncellular organic outer layer of body wall secreted by columnar epithelium of bud; composed of mucopolysaccharides in glycoproteinic frame, hardened by a tanning process (Boardman & Cheetham, 1983). ( Not "chitinous")
The basic outer layer of the hair shaft consisting of interlocking hard keratin cells, the cuticle offers protection from dryness and penetration by foreign substances. This layer may be damaged by excessive brushing as well as overexposure to harsh solutions.The basic outer layer of the hair shaft consisting of interlocking hard keratin cells, the cuticle offers protection from dryness and penetration by foreign substances. This layer may be damaged by excessive brushing as well as overexposure to harsh solutions.
(1) a waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants. (2) the exoskeleton of an arthropod, consisting of layers of protein and chitin that are variously modified for different functions.
The outside surface of a human hair, which contains "imbrications" or overlapping scale-like features. In wigs, this layer is usually removed by chemical means to minimize tangling. Remi (Remy) hair and Virgin hair are harvested with the cuticle going in the same direction, and the cuticle remains intact during the wigmaking process. DEMI-WIG: A partial hairpiece which covers most of the hair, and which allows you to wear your front hair pulled out over the cap and mixed with the wig hair to create length and/or fullness in the style. See also 3/4-WIGS and FALLS.
A thin, waxy, protective layer covering the surface of the stems and leaves of land plants. A necessary adaptation to life on land, the cuticle is composed of a complex mixture of fatty acid derivatives with waterproofing qualities that protect the plant from excessive water loss and dessication in a dry atmosphere. A cuticle first appeared in the liverworts. | Picture
The epidermis; the thin outermost layer of the skin or hair; the outermost part of the epidermis; consists of thinned, hardened, dead cells and the protein cement that holds them together. Also the hard protective skin around the base of finger and toe nails.
the stiffened exoskeleton of an arthropod, composed of protein, the polysaccharide chitin, and sometimes calcium carbonate. It is frequently waterproofed with surface waxes. The cuticle is periodically molted to allow for growth