Ap Biology (Basic Principles Of Animal Form And Function: 40.2)

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Tissues

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an integrated group of cells with a common function, structure, or both

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Epithelial Tissue

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sheets of tightly packed cells that line organs and body cavities

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Glandular Epithelia

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an epithelium that absorbs or secretes chemical solutions

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Mucous Membrane

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smooth moist epithelium that lines the digestive tract and air tubes leading to the lungs

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Simple Epithelium

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an epithelium consisting of a single layer of cells that all touch the basal lamina

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Stratified Epithelium

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an epithelium consisting of more than one layer of cells in which some but not all cells touch the basal lamina

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Cuboidal

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the cubic shape of a type of epithelial cell

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Columnar

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the column shape of a type of epithelial cell

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Squamous

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the flat, tile-like shape of a type of epithelial cell

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Connective Tissue

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animal tissue that functions mainly to bind and support other tissues, having a sparse population scattered through an extracellular matrix

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Collagenous Fibers

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A tough fiber of the extracellular matrix. Collagenous fibers are made of collagen, are nonelastic, and do not tear easily when pulled lengthwise.

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Elastic Fibers

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A long thread made of the protein elastin. Elastic fibers provide a rubbery quality to the extracellular matrix that complements the nonelastic strength of collagenous fibers.

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Reticular Fibers

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A very thin and branched fiber made of collagen. Reticular fibers form a tightly woven fabric that is continuous with the collagenous fibers of the extracellular matrix.

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Fibroblasts

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a type of cell in loose connective tissue that secretes the protein ingredients of the extracellular fibers

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Macrophages

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a phagocytic cell present in many tissues that functions in innate immunity by destroying microbes and in acquired immunity as an antigen-presenting cell

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Muscle Tissue

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tissue consisting of long muscle cells that are capable of contracting when stimulated by nerve impulses

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Nervous Tissue

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tissue made up of neurons and supportive cells

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Organs

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a specialized center of body function composed of several different types of tissues

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Mesenteries

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a membrane that suspends many of the organs of vertebrates inside fluid-filled body cavities

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Thoracic Activity

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the body cavity in mammals that houses the lungs and heart. It is surrounded in part by ribs and separated from the lower abdominal cavity by the diaphragm.

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Abdominal Cavity

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the body cavity in mammals that primarily houses parts of the digestive, excretory, and reproductive systems. It is separated from the thoracic cavity by the diaphragm.

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Organ Systems

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a group of organs that work together in performing vital body functions