In some freshwater Copepoda the secretion of the dermal glands forms a gelatinous envelope, by means of which the animals are able to survive desiccation.
- Tailed, lacertiform or serpentiform batrachians, with the temporal region of the skull roofed over by postorbital, squamosal, and supratemporal plates similar to the same bones in Crossopterygian fishes, and likewise with paired dermal bones (occipitals and post-temporals) behind the parietals and supratemporals.
A large number of representatives of the group are known from both the Old and the New World; specialization displaying itself in the later ones in the development of dermal horns over the nasal bones, either in laterally placed pairs as in some of the early forms, or in the median line, either single or double.
There are no traces either of paired fins or of dermal armour.
Metanemertini, in which the nervous system lies inside the dermal muscles in the parenchyma; the mouth lies in front of the level of the brain; the proboscis as a ru'e bears stylets; the intestine nearly always has a caecum.
These horns, which are of a more or less conical form and usually recurved, and often grow to a great length (three or even four feet), are composed of a solid mass of hardened epidermic cells growing from a cluster of long dermal papillae.
The central mass soon becomes differentiated into an outer epidermal and a dermal layer of flat-cells.
Fibroin, which is analogous to horn, hair and like dermal products, constitutes about 75 to 82% of the entire mass, and has a composition represented by the formula C15H23 506.
About 700 species of Carboniferous fish have been described largely from teeth, spines and dermal ossicles.
The scutes or dermal portions of the scales are more or less ossified, especially on the back, and form the characteristic dermal armour.
Protonemertini, in which there are two layers of dermal muscles, external circular and internal longitudinal; the nervous system lies external to the circular muscles; the mouth lies behind the level of the brain; the proboscis has no stylet; there is no caecum to the intestine.
Mesonemertini, in which the nervous system has passed into the dermal muscles and lies amongst them; other characters as in Protonemertini.
Heteronemertini, in which the dermal musculature is in three layers, an external longitudinal, a middle circular, an internal longitudinal; the nervous system lies between the first and second of these layers; the outer layer of longitudinal muscles is a new development; there is no intestinal caecum; no stylets on the proboscis and the mouth is behind the level of the brain.
The temporal region is covered over, as in the Lacertidae and Anguidae, with strongly developed dermal ossifications.
The most important of these belong to the category of dermal glands, and may be scattered over the surface of the body and limbs, or grouped at certain points for the discharge of special functions.
Owen to the typical representative of a group of gigantic, armadillo-like, South American, extinct Edentata, characterized by having the carapace composed of a solid piece (formed by the union of a multitude of bony dermal plates) without any movable rings.
dermal papilla is feed by the bloodstream which carries nourishment to produce new hair.
dermal fibroblasts cultured in vitro onto a bioabsorbable mesh to produce a living, metabolically active tissue.
dermal absorption in this study.
dermal exposure to metalworking fluids.
dermal skin layer has two types of glands that produce fluids.
It is slightly toxic by skin exposure, with reported dermal LD 50 values of greater than 2000 to 3000 mg/kg in rabbits.
It consists of neonatal dermal fibroblasts cultured in vitro onto a bioabsorbable mesh to produce a living, metabolically active tissue.
Matched to the tissue matrix The density of the tissue matrix in the skin has implications for dermal fillers.
The dermal papilla is in direct contact with blood capillaries in the skin to derive the nutrients for the growing hair follicle.
The dermal papilla is feed by the bloodstream which carries nourishment to produce new hair.
plasmid constructs will be introduced into immortal human and mouse cell lines (such as HeLa and mouse dermal fibroblasts) by transfection.
Increased circulation brings vital nutrients and proteins to the sub dermal layers, leaving skin radiant, cleaner and healthier looking.
BIRD - Louse, any small flat degenerate wingless neuropterous insect of the group Mallophaga, parasitic upon birds and mammals and feeding upon dermal excretions or upon the softer parts of hair and feathers.
The liver first appears as an ento dermal hollow longitudinal outgrowth from the duo denum into the ventral mesentery.
A concomitant dermal invasion by neutrophils and T and B-lymphocytes lead to epithelial infiltration and scab formation.
Permanent makeup, or intradermal pigmentation, is a unique process involving the insertion of pigments into the skin's dermal layer.
Skin prick tests or intra dermal tests to demonstrate IgE allergies are standardized for very few medications.
Phelps's Speedo featured V-shaped dermal denticles that are designed to mimic a shark's skin, thus allowing the water to move more efficiently.
These piercings are also called dermal anchors and are a cross between a surface piercing and an implant.
These unusual body piercings are also called dermal anchors because the jewelry is designed to anchor the exposed part of the jewelry into the skin.
The process of stretching can be performed quickly through dermal punching and scalpelling, or slowly through a gradual increase in size and weight of jewelry.
Silk is also a naturally hypoallergenic material that is advised for individuals with sensitive skin and dermal allergies.
Choose a certified physician who has recieved training on using dermal filler proficiently.
This dermal filler helps smooth out wrinkles by weakening or paralyzing tiny facial muscles.
It's possible to be allergic to this kind of dermal filler, especially if you've ever had botulism.
When these are kept inside the bar of soap, the result is smoother, softer skin that thrives on more moisture and less dermal exposure to ingredients not made for your skin.
Although creams and serums may not have the dramatic affects of cosmetic surgeries or dermal injections, for many people they are a much more affordable option -- and one with far fewer risk factors.
Dermal fillers are used to raise the scar's surface, thus creating a smoother appearance.
Dermal grafting involves placing skin from another part of the body (typically behind the ear) into the scar.
In the typical newts (Molge) of Europe, the males are adorned during the breeding season with bright colours and crests or other ornamental dermal appendages, and, resorting to the water, they engage in a lengthy courtship accompanied by lively evolutions around the females, near which they deposit their spermatozoa in bundles on a gelatinous mass, the spermatophore, probably secreted by the cloacal gland.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.