layering

(noun)

a method of plant propagation in which a bent stem is covered with soil in order to generate new roots

Related Terms

Examples of layering in the following topics:

  • Mucosa

    • It is the absorptive and secretory layer of the GI tract.
    • The GI tract is composed of four layers.
    • Each layer has different tissues and functions.
    • The mucosa is the innermost layer, and functions in absorption and secretion.
    • The most variation is seen in the epithelium tissue layer of the mucosa.

  • Serosa

    • Serosa consists of a secretory epithelial layer and a thin connective tissue layer that reduce the friction from muscle movement.
    • In anatomy, serous membrane (or serosa) is a smooth membrane consisting of a thin layer of cells, which secrete serous fluid, and a thin connective tissue layer .
    • Each serous membrane is composed of a secretory epithelial layer and a connective tissue layer underneath.
    • The epithelial layer, known as mesothelium, consists of a single layer of avascular flat nucleated cells (simple squamous epithelium) which produce the lubricating serous fluid.
    • The layer in contact with the organ is known as the visceral layer, while the parietal layer is in contact with the body wall.

  • Muscularis

    • The GI tract is composed of four layers or also know as tunics.
    • Each layer has different tissues and functions.
    • The muscularis externa consists of an inner circular layer and a longitudinal outer muscular layer.
    • The circular muscle layer prevents food from traveling backward and the longitudinal layer shortens the tract.
    • The layers are not truly longitudinal or circular, rather the layers of muscle are helical with different pitches.

  • What is Skin?

    • Our skin is made of three general layers. 
    • The epidermis is a thin layer of skin. 
    • This layer of skin is itself divided into five separate layers. 
    • This layers helps to repel water.
    • The deepest layer of the skin is called the subcutaneous layer, the subcutis, or the hypodermis. 

  • Glycocalyx

    • A distinct, gelatinous glycocalyx is called abacterial capsule, whereas an irregular, diffuse layer is called a slime layer .
    • It is a layer that lies outside the cell wall of bacteria.
    • It is a well organized layer, not easily washed off, and it can be the cause of various diseases.
    • A slime layer in bacteria is an easily removed, diffuse, unorganized layer of extracellular material that surrounds bacteria cells.
    • The slime layer is not to be confused with the S-layer, a separate and highly organised glycoprotein layer surrounding many bacterial cells.

  • Layers of the Heart Walls

    • These tissue layers are highly specialized and perform different functions.
    • The outer layer of the heart wall is the epicardium.
    • The epicardium refers to both the outer layer of the heart and the inner layer of the serous visceral pericardium, that is attached to the outer wall of the heart.
    • The epicardium is a thin layer of elastic connective tissue and fat, and serves as an additional layer of protection from trauma or friction for the heart under the pericardium.
    • The middle layer of the heart wall is the myocardium—the muscle tissue of the heart and the thickest layer of the heart wall.

  • Submucosa

    • The submucosa is a dense irregular layer of connective tissue with large blood vessels, lymphatics, and nerves that supports the mucosa.
    • The GI tract is composed of four layers.
    • Each layer has different tissues and functions.
    • The muscularis in the stomach differs from that of other GI organs in that it has three layers of muscle instead of two.
    • Under these muscle layers is the adventitia, layers of connective tissue continuous with the omenta.

  • Physical Properties of Soil

    • The soil profile has four distinct layers:
    • Topsoil, the top layer of soil, is usually two to three inches deep, but this depth can vary considerably.
    • For instance, river deltas, such as the Mississippi River delta, have deep layers of topsoil.
    • In some soils, the B horizon contains nodules or a layer of calcium carbonate.
    • Some soils may have additional layers, or lack one of these layers.

  • Structure of the Skin: Epidermis

    • The epidermis is the outermost layer of our skin. 
    • It is the layer we see with our eyes. 
    • In order from the deepest layer of the epidermis to the most superficial, these layers (strata) are the:
    • This layer is one of the most important layers of our skin. 
    • This the only layer of skin we see with our eyes. 

  • Transdermal Drug Administration

    • Single-layer, drug-in-adhesive: The adhesive layer of this system also contains the drug.
    • Multi-layer, drug-in-adhesive: The multi-layer, drug-in adhesive patch is similar to the single-layer system in that both adhesive layers are also responsible for releasing the drug.
    • One of the layers is for immediate release of the drug and the other layer is for controlled release of the drug from the reservoir.
    • The adhesive layer in this patch surrounds the drug layer, thereby partially overlaying it.
    • Vapor patch: In this type of patch, the adhesive layer not only serves to adhere the various layers together, but also to release vapor.