7), the cuticle and all of the internal organs are helically twisted (Higgins and Hirsh 1977).
The cuticle is a collagenous extracellular matrix (ECM) that is synthesized by an underlying ectodermal cell layer termed the hypodermis that surrounds the body of the animal (see Figure 1).
The annular pattern of the outer cuticle layer is established by invaginations in the surface of the hypodermal membrane and corresponds to the position of circumferential actin bundles which form early in lethargus.
The cuticle is the animal's exoskeleton and is important for maintenance of morphology, protection from and/or interaction with the external environment, and motility.
The cuticle lining the pharynx breaks, the old cuticle distends around the head, and the animal pulls back repeatedly to dislodge the cuticle remaining in the pharynx.
The cuticle surface of nematodes is a major focus of studies on the interactions of parasites with their hosts (Maizels et al.
The cuticle is a collagenous extracellular matrix (ECM) that is synthesized by an underlying ectodermal cell layer termed the hypodermis that surrounds the body of the animal (see Figure 1).
The annular pattern of the outer cuticle layer is established by invaginations in the surface of the hypodermal membrane and corresponds to the position of circumferential actin bundles which form early in lethargus.
During each cuticle synthetic period, the cuticle collagen genes are expressed in a distinct temporal series, the pattern of which is repeated at each synthetic period (Johnstone and Barry, 1996).
Cuticle is secreted by the epithelial cells covering the body (hypodermis, seam cells) and by interfacial cells lining the four major openings to the exterior (anus, excretory pore, vulva and pharynx).
The cuticle surface is covered with a surface coat (glycocalyx) that is thought to be secreted by gland cells (the excretory cell, pharyngeal gland cells or the amphid and phasmid support cells) (Nelson et al., 1983; Jones and Baillie, 1995).
The adult cuticle is approximately 0.5 micrometer in thickness (Cox et al., 1981a) and is organized into five major layers or zones: the surface coat (Sc), the epicuticle (Ep) layer and the cortical (Co), medial (Md) and basal (Bs) zones (Cox et al., 1981a; 1981b, Bird and Bird, 1991).
The cuticle is a non-cellular protective layer covering the outer cell layer (epidermis) of the green, aerial parts of land plants.
Cuticles not only help to identify and classify fossil plant species, they are also a valuable source for further information, such as gross morphology, ecology and climate.
Cuticles are among the most resistant parts of the plant, and in compression floras they are often the only part of the plant that still provides some information on cellular structures.
Note the layered cuticle on the shaft and the bulb at the bottom.
Underneath the cuticle is the cortex, which is made up of long proteins that twist like the curly cord on a telephone.
To fill the gaps between the protective cuticlecells and to keep your hair shiny and flexible, glands adjacent to the hair follicle produce a kind of natural hair conditioner called sebum.
The epidermis is the living body layer that produces the non-living cuticle.
Keep in mind that the upper boundary shown here is in contact with the outside world and the lower boundary (the epidermal cells resting on the basement membrane) are in direct contact with the hemolymph (insect blood).
Cuticle may be any variety of characteristics from rigid to elastic to flexible, etc. It is the chemicals present that impart various qualities to the different exoskeletal types.
www.uwrf.edu /~cg04/333/cuticle.html (562 words)
Highbeam Encyclopedia - Search Results for cuticle(Site not responding. Last check: )
Cuticle Care from Revlon See Revlon's full line of cuticle nippers and trimmers at Revlon.com.
Effects of chemical drying agents on the fine structure of alfalfa cuticles and epicuticular waxes.
Cuticle strength and the size-dependence of safety factors in Cancer crab claws.
Essie Apricot Cuticle Oil is a soothing massage oil that seals in moisture and hydrates cuticles and nails.
Kiehl's Imperial Moisture Cuticle Treatment is a thick, rich moisturizing treatment with Avocado Oil and Vitamin Oils for overall hand-care maintenance as well as an aid in the relief of dry cuticles.
Removes the forward growth of cuticle that adheres to the base of the nail.
This is the first experiment-based comprehensive scientific book devoted the plant cuticle since the 1970's that is not a compilation of conference proceedings...[and] is of interest to ecologists, environmental scientists, entomologists, and phytopathologists.
A much clearer picture is now emerging of the fine structure of the plant cuticle and its surface, the composition of cuticular waxes and the biosynthetic pathways leading to them.
Studies assessing the impact of UV radiation on plant life have emphasized the role of the cuticle and underlying epidermis as optical filters for solar radiation.
The cuticle is thicker in plants living in dry climates than inthose from wet climates.
Cutin, as a structural componentof the cuticle, is covered with cuticular and epicuticular waxes, a mixture of hydrophobic materials containing C26 to C36 aliphatic compounds.
In the past it was held that cuticles should not be cut as a matter of course, and this still rings true, even if it may be easier in the short term to simply snip away torn cuticles.
Although it is now in vogue to make cuticle conditioning products in a light oil format, we have after extensive experimentation found that the best way to treat this, is to treat them to a very thick, nearly solid, type of cream, which has to be massaged into the cuticle.
A rich nourishing blend of Cocoa butter, Almond, Wheatgerm and Beeswax serves as the base of this cuticle and nail balm, as cocoa butter is a rich emollient base, while almond moisturizes and soothes.
Venus Worldwide offers a complete line of professional facial tools, from flhead removers to tweezers, facial scissors, and more.Whether you need a pair of tweezers, or an entire home facial kit, we have what you need to give your face and nails a beautifully refreshed look.
"The use of sharp instruments during a manicure can result in traumatic nail problems, as the cuticle is often clipped or removed with small nippers or metal scrapers," says Dr. Phoebe Rich, clinical associate professor of dermatology, Oregon Health Sciences University in Portland.
"The cuticle serves an important function in protecting the nail from organisms, and when it is removed there is a space where bacteria and fungus can enter." Some states even have laws making it illegal to have your cuticles cut in a salon.
