derma = skin; superficial layer of skin.
The epithelium covering the surface of the skin.
The epidermis is a layer of cells on the exterior of stems and leaves as well as other plant organs. This is a protective layer that keeps out bacterial and fungal spores as well as sealing the plant organ from loss of water. Cutin, secreted by the epidermal cell, is a waxy material that allows the epidermal cell to be very effective in preventing water loss. In cross section, the epidermis looks like small bricks. Looking at epidermal cells from the top down, they have the appearance of a jigsaw puzzle pieces. DIAGRAMS: Stomata / Root Anatomy / Woody Stem / Equisetum Ovary Position PHOTOS: Tilia Stem Cross Section (6-year) Tilia Stem Cross Section (3-year) Monocot Stem Cross Section / Monocot Stem Cross Section Leaf Cross Section / Leaf Cross Section Root Cross Section / Root Cross Section Fucus / Fucus / Fucus / Fucus / Fucus Puccinia / Puccinia Anthoceros Moss Stem Cross Section Moss Leaf Cross Section
The external cell layer of plants that forms the boundary of the plant with the environment.
outer layer of skin; above the dermis.
The out layer of cells on a plant. It protects the inside parts. It is like our skin.
The outermost cell layer of a plant. These cells are often covered by the cuticle layer.
the most superficial layer of skin.
thin membranous outer layer or covering.
(adj. epidermal) surface layer of cells of leaves and other plant parts
An outer layer of primary plant tissue that is usually one cell thick and provides protection to underlying tissues.
outermost layer of cells on plant parts.
The outermost protective cell layer of tissue, usually covered by a cuticle
The outermost cells of the primary plant body, usually consisting of a single layer but sometimes several layers thick.
Outermost layer of cells on roots, stems, and leaves which serves a protective function.
ep-ee-DERM-is The outer integumentary layer in several types of organisms. 517, 536, 598
the exterior tissue, usually on cell thick, of leaves and young stems and roots
superficial cell layer covering all parts of the plant except the root tip and apical meristem.
The outermost layer of the skin that serves as a tough, waterproof protection.
The outermost layer of the skin. Melanocytes, basal cells, and squamous cells are found in the epidermis. Overexposure of the epidermis to ultraviolet rays from the sun can lead to skin cancer. See also: Skin-Cancer
This is the superficial epithelial (surface) layers of the skin. The epidermis is where new cells are constantly being formed.
The outer layer of the skin that protects you from heat and cold.
The surface layer of the skin of a vertebrate (Halliday 1987).
The outer nonsensitive and nonvascular layer of the skin.
the uppermost layer of the skin.
The outer layers of skin.() Free radicals: Unstable, scavenger cells that cause damage to healthy cells. They can come from the sun, pollution, stress, cigarettes, alcohol, and other outside factors. The best line of defense is using antioxidant vitamins such as A, C and E which help to neutralize free radicals. ()
The outermost layer of the skin. The epidermis contains no nerves or blood vessels, so the epidermis alone is incapable of sensation or bleeding. Composed of a protective outer layer of nonliving keratin-derived scale cells, the epidermis acts as an envelope or seal against the environment and exerts some control on the amount of moisture lost to the environment. The epidermis contains keratinocytes (cells that make keratin) and melanocytes (cells that make pigment), as well as other specialized cells.
outer cellular layer of the skin about 50 cells thick; only the cells in the deepest layers (basal cells) reproduce.
1. The exterior tissue of leaves, roots and young stems of plants usually comprising a single layer of cells. 2. The outer layer of cells of an invertebrate (esp. arthropods).
Another of the bran skins.
The top or outer layer of skin.
The outer layer of skin which covers the entire body and is only about as thick as a single sheet of paper.
The abnormally increasing pigmentación of new to the pigmentación abnormally diminished of the cover, being from the diminished production del melanin (dark pigment) of new to the protein of the cover To that it is in hair, the nails and the outer skin leans.
The epidermis is the protective outer layer of the skin. It is in a constant state of renewal, shedding older cells and replacing them with newer cells. Basal cells in the lower level of the epidermis move towards the surface. These basal cells divide and become squamous cells, which get flatter and harder as they move towards the surface. Eventually squamous cells rest on the surface, only to be shed and replaced again over a twenty-eight day cycle. The epidermis also contains melanocyctes that produce and distribute melanin, the pigment that gives skin and hair it's color. Melanin ranges from minimal in very fair skin to dense in black skin. Melanin helps to protect the skin against UV-related damage.
Greek epi = upon, and derm = skin, hence, the most external layer of the skin.
the outermost layer of the skin that consistently regenerates itself. The top level of cells are dead skin cells and underneath are living cells that push their way up to the surface, then die and flake off.
the superficial or covering layer of cells.
The outer layer of the skin, which is constantly being renewed and is made up of layer upon layer of skin cells (keratinocytes). These grow outwards to the surface where they die and are shed.
the thin outermost layer of the skin, itself made up of several layers, that covers and protects the underlying dermis.
The outer tissue layer of plants that functions primarily in protection
outer layer of cells in plants and animals
1. The outermost layer of skin consisting of several layers of epithelial cells&emdash;notably, keratinocytes&emdash;and, in the inner layer of the epidermis, basal cells and melanocytes. 2. The outer layer of cells in the plant body, often covered by a waxy cuticle.
Outermost layer of skin which protects the dermis.
the outer layer(s) of the skin.
Skin; the outer cellular layer of the body wall, which secretes mucus.
The epidermis is the upper most layer of skin. It is attached to the bottom of the nail plate and is ridged with tiny 'rails' that run in the same direction as the dermis grooves. The effect is much like a train riding on its tracks as it moves forward.
The protective, outer, nonvascular layer of the skin.
the epidermis is the layer of cells that covers the outer surface of the sponge. The thin, flattened cells of the epidermis are called pinacocytes.
Uppermost layer of the skin. The epidermis is highly cellular and divided into layers: the basal (bottom) layer that produces new cells and contains melanocytes or pigment-producing cells; a thick prickle cell layer; the granular cell layer and the stratum corneum or top layer.
upper/outer layer of the skin.
a superficial layer of cells occurring on all parts of the primary plant body; stems, leaves, roots, flowers, and seeds.
The outer layer of the skin atop the dermis.
The outermost layer of skin. The epidermis has several active zones of skin cells, including cells that participate in immune reactions. Many eczematous skin conditions are initiated in the epidermis.
Gr. epi: upon + derma: skin] • In plants and animals, the outermost cell layers. (Only one cell layer thick in plants.)
Abnormally increased pigmentation. back to top Abnormally diminished pigmentation, resulting from diminished melanin (dark pigment) production. A protein which is found in hair, nails and the outermost skin layer.
The upper covering layer of the body, and with the underlying dermis, is referred to as the skin. The upper-most part of the epidermis is called the stratum corneum, composed of dead cells. Immediately below that is the area of living epidermal cells. It is within this layer that the various pathologic changes of pemphigus take place. Superficial separation is seen more in pemphigus foliaceus while slightly deeper separation is seen in pemphigus vulgaris. In bullous pemphigoid the separation occurs below the epidermis - between the epidermis and dermis.
The top layer of our skin. It is made up of squamous cells, melanocytes, and keratinocytes.
Outer skin of the twig; sometimes peeling or cracking during the first winter; ultimately destroyed by growth in diameter of the twig.
top layer of skin protecting the dermis; composed mainly of squamous cells, as well as basal cells, melanocytes, and keratinocytes.
The outermost layer of the "skin", usually one cell thick.
The outer layer of the skin, which acts as a waterproof and protective barrier to the body tissue below.
outer layer of skin, formed from epithelial tissue
(ehp'-ih-DERM-ihs) The superficial layer of skin composed of stratified squamous epithelium.
the outermost layer of cells of an organ, usually only one cell thick.
top layer of skin, composed mainly of squamous cells, as well as basal cells, melanocytes, and other types of cells
In plants and animals, the epidermis is the outermost cell layer. (Only one cell layer thick in plants.)
The outer layer of cells of all parts of a young plant and of some parts of older plants, such as leaves and fruits. These cells are usually covered with a waxy substance, called the cuticle, that minimizes water loss.
The superficial layer of cells occurring on all plant parts. ()
The outermost layerof cells (?skin?) of an organ, usually one cell thick. Parent Term: Surface_details Difficulty Level
the outermost (external) layer of the skin. The principle cell of the epidermis is the keratinocyte. The epidermis is subdivided into 5 layers; stratum germinativum, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum (outermost layer).
the outermost part of a leaf
Top layer of the skin, its upper part being made of horny material (stratum corneum). It prevents the body from dehydrating and protects it against environmental factors. The epidermis also contains other cells, such as basal cells and Merkel cells. Merkel cells are responsible for our sense of touch.
The outermost layer of cells covering the leaves and young parts of a plant.[Late Latin, from Greek : epi-, epi- + derma, skin; see der- in Indo-European roots.
the outer layer of the skin. Cells at the bottom of the epidermis (basal layer) divide in an orderly way to replace the dead cells continually worn away from the surface of the skin.
Roles: Protecting the organism from external threat through the production in its upper section of a protective stratum corneum which is about 0.2 mm thick. A barrier against UV radiation. An immunological barrier (pathogenic bacteria, viruses, etc.) barrier against chemical liquids and substances. Protection from scratches, scrapes and stings. The epidermis is composed of 4 layers of cells with specific morphologies and metabolism. The horny layer (10 to 30 layers of cells). The granule cell (3 to 4 layers of cells). The spiny layer (5 to 6 layers of cells). The basal layer (a single leyer of cells). Thickness: 0.2 mm (eyelid) to 1 mm (soles of the feet).
The epithelium of the skin. It is typically a stratified squamous epithelium, with outer keratinized layers of cells that protect against dehydration and physical abrasion.
Outer layer of skin. It is the thinnest on the eyelids and the thickest on the soles of feet and palms of hands.
the outer skin of a plant.
the external cellular layer of a multicellular organism. Invertebrate epidermis is often one cell thick and may secrete a waxy cuticle. Vertebrate epidermis is the multiple cell layer of the skin. the outermost cell layer of a multicellular organism, an example is the skin of vertebrates.
The top layer of the skin, which acts as your body's natural suit of armor. The epidermis is made up of corneocytes (the outermost layer of dead skin cells), melanocytes (which produce melanin, the substance that gives your skin its color), and Langerhan cells (which work with the immune system to help you fight off disease).
outer protective layer of skin
The outer layer of cells. A layer of primary tissue in higher plants that is commonly one cell thick, often cutinized on its outer surface, and continuous in young plants except over the stomata. The epidermis provides protection to the underlying parts against mechanical injury and desiccation and is largely replaced in older plants except on leaves and herbaceous stems.
Gr. epi - on, upon; Gr. dermis - skin, leather]. The outermost skin layer, derived from ectoderm.
the outer layer of skin, which is made up of the horny layer, squamous cells and basal cells.
outer layer of skin, derived from ectoderm
1. The outer epithelial layer of skin. The epidermis is the nonsensitive, nonvascular layer that covers the dermis. 2. The outer layer of overlapping scales on the surface of wool fiber.
Thin outermost layer of skin. It is made up of several layers and covers and protects the underlying dermis layer of connective tissue.
Most superficial layer of the three layers of skin.
The top five layers of the skin where psoriasis forms.
the thin outer layer of skin, on top of the the thicker and deeper dermis.
The outer most layer of skin; varies in thickness and contains several layers.
The relatively thin, protective, outer layer of the skin
The outer layer of the skin; contains squamous cells, basal cells and melanocytes.
the outermost layer of the integument (see figure at that entry) During development, the inner layer ( stratum basale or stratum germinativum) is in contact with the basement membrane.
The different layers of the skin.
Gk, epi, on or upon + derma, skin], the superficial, avascular, layers of the skin, made up of an outer, dead cornified portion and a deeper, living, cellular portion. Altogether, these layers are between 0.5 to 1.1 mm
Outer epithelial layer of skin (non-vascular). Back to glossary index
The outer cellular layer of the skin that produces the stratum corneum, a cellophane-type membrane that separates the skin from its environment.
outer layer of the skin that contains nerve endings but no blood vessels
The superficial layers of the skin, consisting of an outer, dead layer and a deeper, living, cellular zone.
The outer layer of the skin. The epidermis is also the thinnest layer, responsible for protecting you from the harsh environment.
The outer section of the skin, which separates the external environment from the dermis. Cosmetic products can't penetrate any deeper than the epidermis's outermost layer, the stratum corneum. In terms of dry skin and moisturizing, the stratum corneum is where all the action is.
The outer layer of cells or skin of various plant parts.
The outer skin, e.g. the leaf
The surface layer of an animal's skin or the outer layer of tissue in a plant.
The outermost layer of skin, which is in contact with the environment, located above the dermis
The outer layer of the skin, it protects the body from the sun, from bacterial invasion, and from dehydration. The epidermis forms the first immune defense for outside invaders, so skin health is essential to support this defense.
The thin upper or outer layer of skin.
(èp-ì-dûr´-mìs) - The outermost layer of cells on all the primary parts of a plant: stem, roots, leaves, flower, fruit, and seeds.
The outermost layer of skin cells, including the cuticle. The outer surface visible to the eye.
The outer layer of human skin, composed of a thin layer of epithelial cells.
The outer, nonvascular, nonsensitive layer of the skin which contains no nerves or blood vessels. The epidermis acts as a seal against the environment while exerting some control over the amount of moisture lost to the environment.
outermost, thinner layer of skin, composed of stratified squamous epithelium
Epidermis refers the outermost layer of skin.
The outermost layer of cells or skin. This tissue often contains specialized cells for defense, gas exchange, or secretion.
The outer layer of the skin which provides protection against the elements. The epidermis replaces itself about every 45-75 days and is comprised of four layers: stratum corneum, granular layer, spinous layer and basal layer. The stratum corneum is the outer most layer and is primarily made up of keratin proteins. The basal layer is where the cells grow and divide.
The outermost epithelial layer of the skin, consisting of many layers of squamous cells in four strata, with inclusions of special cells such as melanocytes and keratinocytes.
The epidermis is the outer epithelial layer of the skin, and is mainly composed of keratinocytes.
The outer layer of the skin. Unlike the dermis, the epidermis does not contain nerve endings or blood vessels.
(1) the dermal tissue system in plants. (2) the outer covering of animals.
The outer layer of the skin. It is also the skin's thinnest layer.
The outer surface layer of the skin that contains both squamous and basal cells.
The outermost layer of skin in animals, or the outermost cell layer in plants.
The outer layer of the skin composed of stratified squamous epithelium
The epidermis is the outer protective layer of a plant. This tissue helps prevent injury and minimizes water loss by evaporation.
The outer layers of the skin.
Epidermis is the outermost layer of the skin. It forms the waterproof, protective wrap over the body's surface and is made up of stratified squamous epithelium with an underlying basal lamina.
The epidermis (pluralized either epidermises or sometimes epidermes) is the outer single-layered group of cells covering a plant, especially the leaf and young tissues of a vascular plant including stems and roots. Epidermis and periderm are the dermal tissues in vascular plants. The epidermis forms the boundary between the plant and the external world.