Buffy Coat- Definition, Preparation, Uses

Buffy Coat

Buffy Coat Definition A buffy coat suspension is a concentrated suspension of leukocytes and platelets that make up a part of the anticoagulated blood sample obtained by the process of density gradient centrifugation. The term buffy coat arose from the fact that the suspension has a color (yellowish beige) that is similar to buff. Buffy coats primarily contain white blood …

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Genus Spirogyra – An Overview

Morphology of Spirogyra

Spirogyra Definition Spirogyra is a green alga that is mostly found in freshwater in the form of clumps. These are also called Water silk or Mermaid’s tresses. It is a unicellular organism but can be seen in freshwater bodies as it clumps together to form a multicellular structure. Spirogyra consists of chlorophyll which gives it a green appearance. As a …

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Glandular epithelium- definition, structure, functions, examples

Glandular epithelium

Glandular epithelium definition The glandular epithelium is a group of tissues, other than the covering and lining epithelium, which is specialized for the production and secretion of various macromolecules. Because of its primary function, the glandular epithelium is also called the secretory epithelium. This epithelium lies beneath the covering and lining epithelium and either consists of cells with specific functions …

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Transitional epithelium- definition, structure, functions, examples

Transitional epithelium

Transitional epithelium definition Transitional epithelium is a type of stratified epithelium consisting of multiple layers of cells where the shape of the cell changes according to the function of the organ. The epithelium has a varying appearance as they appear cubical or round when in a relaxed state, except the apical layer which seems to be flattened when stretched. This …

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Pseudostratified columnar epithelium- structure, functions, examples

Pseudostratified columnar epithelium

Pseudostratified columnar epithelium definition The pseudostratified columnar epithelium is a type of epithelium consisting of a single layer of cells that gives the appearance of being multiple layers because the nuclei of the cells are present at different levels. This epithelium is histologically a simple epithelium even though in a crosssection, it might appear as a stratified epithelium. The pseudostratified …

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Stratified columnar epithelium- structure, functions, examples

Stratified columnar epithelium

Stratified columnar epithelium definition The stratified columnar epithelium has multiple layers of cells in which the apical layer is made up of columnar cells while the deeper layer can be either cuboidal or columnar. As in the case of other stratified epithelium, the cells in the deeper layers might be different than the layer on the top. The modification of …

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Stratified cuboidal epithelium- structure, functions, examples

Stratified cuboidal epithelium

Stratified cuboidal epithelium definition Stratified cuboidal epithelium has multiple layers of cells in which the apical layer is made up of cuboidal cells while the deeper layer can be either cuboidal or columnar. As in the case of stratified squamous epithelium, the cells in the deeper layers might be different than the layer on the top. The modification of the …

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Stratified squamous epithelium- structure, functions, examples

Stratified squamous epithelium

Stratified squamous epithelium definition The stratified squamous epithelium consists of several layers of cells, where the cells in the apical layer and several layers present deep to it are squamous, but the cells in deeper layers vary from cuboidal to columnar. As the most important difference between the simple epithelium and the stratified epithelium is the number of the layer …

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Simple columnar epithelium- structure, functions, examples

Simple columnar epithelium

Simple columnar epithelium definition The simple columnar epithelium is a type of epithelium that is formed of a single layer of long, elongated cells mostly in areas where absorption and secretion are the main functions. Like cuboidal epithelium, the cells in the columnar epithelium are also modified to suit the function and structure of the organ better. The simple columnar …

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Simple cuboidal epithelium- structure, functions, examples

Simple cuboidal epithelium

Simple cuboidal epithelium definition Simple cuboidal epithelium is a type of simple epithelium consisting of cube-shaped cells with rounds and more or less centrally located nucleus. They are mostly derived to suit the function of the particular organs better. Because the simple cuboidal epithelium has a single layer of cells, all the cube-shaped cells are directly attached to the basement …

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