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Definition
| a sheet of cells that covers a body surface or lines a body cavity |
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| Epithelium characteristics |
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Definition
| polarity, specialized contacts, supported by connective tissue, avascular (no blood vessels) but innervated, regeneration |
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Definition
| single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm |
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Definition
| allows for diffusion and filtration; found in kidneys, air sacs of lungs, lining of heart, blood vessels, lymphatic vessels, ventral body cavity lining |
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Definition
| single layer of cubelike cells with large, spherical central nuclei |
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Definition
| secretion and absorption; found in kidney tubules, ducts and secretory portions of small glands, ovary surface |
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Definition
| single layer of tall cells with round to oval nuclei; some cells bear cilia; layer may contain mucus-secreating goblet cells |
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Definition
| absorption and secretion; non-ciliated type found in digestive tract, gallbladder; ciliated type lines small bronchi, uterine tubes and some regions of uterus |
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Term
| pseudostratified columnar |
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Definition
| single layer of cells of differing heights, some not reaching the free surface, nuclei seen at different levels, may contain mucus-secreating cells |
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Term
| pseudostratified columnar |
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Definition
| secretion: mainly of mucus; non-ciliated type in males sperm ducts, ciliated lines the trachea and most of the upper respiratory track |
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Definition
| thick membrane composed of several layers of cells, |
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Definition
| protects underlying tissues in areas subject to abrasion; nonkeratinized- lining of the mouth, esophagus, and vagina. keratinized(contains keratin, a tough protective protein)- epidermis of the skin |
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Term
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Definition
| rare; mainly found in the ducts of larger glands (sweat and mammary) * two layers typically |
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Term
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Definition
| limited; in the pharynx and the male urethra |
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Term
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Definition
| resembles stratified squamous and cuboidal cells; surface cells are dome shaped |
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Term
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Definition
| stretches readily; lines the ureters, bladder and part of the urethra |
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Term
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Definition
| consists of one or more cells that make and secrete a particular product |
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Term
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Definition
| often lose their ducts; produce hormones that they secrete by exocytosis into the extracellular space |
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Term
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Definition
| are numerous and their products are familiar; secrete products onto the body surfaces (skin) |
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Term
| unicellular exocrine glands |
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Definition
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Definition
| found everywhere in the body; most abundant of the primary tissuees |
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Term
| characteristics of connective tissue |
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Definition
| common origin (mesenchyme), extracellular matrix |
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Term
| elements of connective tissue |
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Definition
| ground substance, fibers, cells |
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Term
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Definition
| unstructured material that fills the space between the cells and contains the fibers |
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Term
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Definition
| constructed primarily of collagen and assemble into cross-linked fibrils; extremely tough and provide high tensile strength |
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Term
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Definition
| long, thin fibers that form branching networks in extracellular matrix |
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Term
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Definition
| are short, fine, collagenous fibers; branch extensively and form delicate networks |
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Definition
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Definition
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Definition
| cushions organs, plays role in inflammation; holds tissue liquids |
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Definition
| widely distributed under epithelium; packages organs, surronds capillaries |
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Term
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Definition
| provides reserve food fuel; insulation against heat loss; supports and protects organs |
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Term
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Definition
| fibers form a soft internal skeleton that supports other cell types; lymphoid organs (bone marrow, spleen) |
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Term
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Definition
| attaches muscles to bones or other muscles; withstands great tensile strength |
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Definition
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Definition
| able to withstand tensile strength in many directions; provides structural strength |
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Definition
| fibrous capsules of organs and joints, dermis of skin |
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Term
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Definition
| allows recoils of tissue following stretching, aids in recoil of lungs after inspiration |
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Definition
| walls of large arteries, within walls of bronchial tubes |
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Term
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Definition
| support and reinforces, resists compression strength |
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Term
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Definition
| forms most of the embryonic skeleton, covers the ends of large bones, in cartilages of the ribs, nose, trachea, and larynx |
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Definition
| maintains the shape of a structure while allowing great flexibility; external ear |
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Definition
| tensile strength with the ability to absorb compressive shock; intervertebral discs, pubic and knee joint |
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Definition
| supports and protects; provides levers; stores calcium; contains marrow |
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Definition
| transport of respiratory gases, nutrients, wastes, and other substances |
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Definition
| transmits electrical signals from sensory receptors, and effectors; brain, spinal cord, and nerves |
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Definition
| voluntary motion, locomotion; manipulation of the environment; facial expression; |
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Definition
| contracts and propels blood into the circulation; walls of heart |
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Definition
| propels substances along internal passageways; walls of hollow organs |
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Definition
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Term
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Definition
| line body cavities that open to the exterior |
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Term
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Definition
| moist membranes found in closed ventral body cavities |
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