what are the three main functions of epithelial tissue?
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In epithelial tissue, cells are closely packed with little or no extracellular matrix except for the basal lamina that separates the epithelium from underlying tissue. The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and filtration.
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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. ... All glands are made up of epithelial cells.
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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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Simple Epithelia Simple epithelial tissues are generally classified by the shape of their cells. The four major classes of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified.
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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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The organs of the male reproductive system are specialized for three primary functions: To produce, maintain, transport, and nourish sperm (the male reproductive cells), and protective fluid ( semen ).
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Function. The transitional epithelium cells stretch readily in order to accommodate fluctuation of volume of the liquid in an organ (the distal part of the urethra becomes non-keratinized stratified squamous epithelium in females; the part that lines the bottom of the tissue is called the basement membrane).
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There are three main functions of the gastrointestinal tract, including transportation, digestion, and absorption of food.
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Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Each of these categories is characterized by specific functions that contribute to the overall health and maintenance of the body.
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The digestive system has three main functions: digestion of food, absorption of nutrients, and elimination of solid food waste. Digestion is the process of breaking down food into components the body can absorb.
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Identify the four types of tissue in the body, and describe the major functions of each tissue. The four types of tissues in the body are epithelial, connective, muscle, and nervous.
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There are four main types of tissue: muscle, epithelial, connective and nervous. Each is made of specialized cells that are grouped together according to structure and function. Muscle is found throughout the body and even includes organs such as the heart. Our outer layer of skin is epithelial tissue.
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['Epithelial tissue. covers body surfaces; lines body cavities, hollow organs, and ducts (tubes); and forms glands.', 'Connective tissue. ... ', 'Muscular tissue. ... ', 'Nervous tissue. ... ', 'Fibroblasts. ... ', 'Macrophages. ... ', 'Plasma cells. ... ', 'Mast cells.']
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['Epithelial Cells. These cells are tightly attached to one another. ... ', 'Nerve Cells. These cells are specialized for communication. ... ', 'Muscle Cells. These cells are specialized for contraction. ... ', 'Connective Tissue Cells.']
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['Epithelium covers the body surface and lines body cavities.', 'Muscle provides movement.', 'Connective tissue supports and protects body organs.', 'Nervous tissue provides a means of rapid internal communication by transmitting electrical impulses.']
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The skin has three main functions: protection, regulation and sensation.
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Epithelial cells make up tissues such as the hair, skin, and nails. These cells also line the internal organs and are an important part of many glands. Keratins are best known for providing strength and resilience to cells that form the hair, skin, and nails.