what are the various types of epithelial intercellular connections?
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Three basic types of connections may be present: tight junctions, anchoring junctions, and gap junctions (Figure 4.2. 1). Epithelial cells are held close together by cell junctions. The three basic types of cell-to-cell junctions are tight junctions, gap junctions, and anchoring junctions.
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['Cytoskeleton. network of fibers extending throughout the cytoplasm and composed of microtubules, microfilaments, and intermediate filaments.', 'Function of Cytoskeleton. ... ', 'cell motility. ... ', 'motor proteins. ... ', 'Microfilaments (Actin) ... ', 'Microfilaments (Actin) Function. ... ', 'Intermediate Filaments. ... ', 'Intermediate Function.']
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['epithelial tissue.', 'connective tissue.', 'muscle tissue.', 'nervous tissue.']
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Epithelial membranes consist of epithelial tissue and the connective tissue to which it is attached. The two main types of epithelial membranes are the mucous membranes and serous membranes.
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['Cell membrane (Plasma membrane) ... ', 'Cytoplasm (Cytosol) ... ', 'Nucleus. ... ', 'Ribosomes. ... ', 'Rough endoplasmic reticulum. ... ', 'Smooth endoplasmic reticulum. ... ', 'Golgi apparatus. ... ', 'Transport vesicle.']
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A simple squamous epithelium is a single layer of flat cells in contact with the basal lamina (one of the two layers of the basement membrane) of the epithelium. This type of epithelium is often permeable and occurs where small molecules need to pass quickly through membranes via filtration or diffusion.
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Desmosomal cadherins connect to cytoplasmic intermediate filaments via adapter proteins analogous to those that connect adherens junction cadherins to actin filaments. ... Mutations in this part of epidermal keratins cause blistering skin diseases by compromising the integrity of desmosomes (see Fig.
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Epithelium is one of the 4 primary tissues of the body. ... In a simple epithelium the cells form a single layer and are all attached to the basement membrane. A stratified epithelium consists of multiple layers of cells in which only the basal layer is attached to the basement membrane.
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Chapter Review. The human body contains more than 200 types of cells that can all be classified into four types of tissues: epithelial, connective, muscle, and nervous. Epithelial tissues act as coverings controlling the movement of materials across the surface.
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67394. Anatomical terminology. Cell junctions (or intercellular bridges) are a class of cellular structures consisting of multiprotein complexes that provide contact or adhesion between neighboring cells or between a cell and the extracellular matrix in animals.
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The four types of tissue in the body are epithelial, connective, muscle, and nervous.
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The four types of tissues in the body are epithelial, connective, muscle, and nervous. Epithelial tissue is made of layers of cells that cover the surfaces of the body that come into contact with the exterior world, line internal cavities, and form glands.
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The epithelium is a flat sheet of closely linked cells which is one or more cells thick, with the outer surface exposed to the external environment or to an internal space in the body. It consists almost entirely of cells with very little extracellular matrix between them.
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Epithelium (/ˌɛpɪˈθiːliəm/) is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs.
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['Skin.', 'Skin appendages. Hairs. Nails. Sweat glands. Sebaceous glands.', 'Subcutaneous tissue and deep fascia.', 'Mucocutaneous junctions.', 'Breasts.']
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Stratified Epithelium Stratified epithelia consist of more than one layer of cells and only one layer is in direct contact with the basement membrane. Similarly, only one layer of cells has the apical surface exposed to the lumen of the organ or to the external environment.
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In humans, there are four basic types of tissue: epithelial, connective, muscular, and nervous tissue. There may be various sub-tissues within each of the primary tissues. Epithelial tissue covers the body surface and forms the lining for most internal cavities.