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60 Cards in this Set
- Front
- Back
Epithelial Tissue Functions
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Protection
Secretion Absorption Excretion |
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Single layer of flat cells
Substances pass through easily Line air sacs line blood vessels line lymphatic vessels |
Simple Squamous
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Single layer of cube-shaped cells
Line kidney tubules Cover ovaries Line ducts of some glands |
Simple Cuboidal
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Single layer of elongated cells
Nuclei usually near basement membrane (and at the same level) Sometimes possess microvilli Often have goblet cells Line uterus, stomach, intestines |
Simple Columnar
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Single layer of elongated cells
Nuclei at two or more levels OFten have cilia Often have goblet cells Line respiratory passages |
Pseudostratified Columnar
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Many cell layers
Top cells are flat Can accumulate keratin Outer layer of skin Line oral cavity, vagina, anal canal |
Stratified Squamous
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2-3 layers
Cube-shaped cells Line ducts of mammary glands, sweat glands, salivary glands, pancreas |
Stratified Cuboidal
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Top layer of elongated cells
Cube-shaped cells in deeper layers Line part of male urethra and part of pharynx |
Stratified Columnar
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Many cell layers
Cube-shaped and elongated cells Line urinary bladder, ureters, and part of urethra |
Transitional
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Cells that are specialized to produce and secrete substances
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Glandular Epithelium
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Glandular Epithelium (Ductless)
Glands that secrete their products into tissue fluid or blood are called? |
Endocrine
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Glandular Epithelium (Have Ducts)
Glands that secrete their products into ducts that open into surfaces, such as the skin or the lining of the digestive tract? |
Exocrine
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Four Major Tissue Types
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epithelial, connective, muscle, and nervous
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Tissues that cover the body surface and organs, forms the inner lining of body cavities, and lines hollow organs.
Lacks blood vessels Protection, secretion, absorption, excretion |
Epithelial Tissues
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Single epithelial cell, such as a mucous-secreting goblet cell
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Unicellular Exocrine Gland
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Composed of many cells and can be structurally subdivided into two groups (simple and compound)
Sweat glands, salivary glands |
Multicellular Exocrine Glands
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Glands that release fluid products by exocytosis
Fluid product |
Merocrine
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Glands that lose small portions of their glandular cell bodies during secretion are called...
Cellular product |
Apocrine
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Glands that release entire cells are called...
secretory product |
Holocrine Secretion
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Compound alveolar gland that produces milk
Apocrine Gland Secretory portions are irregularly branched tubules with numberous saclike outgrowths |
mammary glands
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Simple branched alveolar gland that excretes oil
Holocrine Gland secratory portions of gland expand into saclike compartments along duct |
Sebaceous gland of the skin
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Simple coiled tubular gland (Eccrine)
Merocrine gland Long, Coiled, tubelike gland, long duct |
Sweat glands of the skin
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comprise much of the body and are the most abundant type of tissue by weight.
Bind structures, provide support and protection, serve as frameworks, fill spaces, store fat, produce blood cells, protect against infections, and help repair tissue damage. Have a matrix Have varying degrees of vascularity, Have cells that usually divide |
Connective tissue.
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Composed of protein fibers and a ground substance consisting of nonfibrous protein and other molecules and fluid.
medium through which substances can be transferred between blood and cells of the tissue |
Extracellular matrix
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Most common type of fixed cell in connective tissues. Large, star shaped cells produce fibers by secreting proteins into the extracellular matrix f connective tissues.
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Fibroblasts
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Originate as white blood cells and are almost as numerous as fibroblasts in some connective tissues. Usually attached to fibers but can detach and actively move about.
Scavenger cells, can clear foreign particles from tissues |
Macrophages
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Large and widely distributed in connective tissues, where they are usually near blood vessels. They release heparin, a compound that prevents blood clotting.
Release histamine, which is a substance that promotes some of the reactions associated with inflammation and allergies. |
Mast cells
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Three types of Connective Tissue Fiber
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Collagenous fibers
Reticular Fibers Elastic Fibers |
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Thick threads of the protein collagen, the major structural protein of the body. Grouped in long , parallel bundles, and they are flexible but only slightly elastic.
Have great tensile strength--they can resist considerable pulling force. |
Collagenous Fibers
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Collagenous fibers that hold bones to bones.
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Ligaments
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Collagenous fibers that connect muscle to bones.
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Tendons
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Two major categories of connective tissues
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Loose and dense
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Loose connective tissues
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areolar, adipose, reticular
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Dense connective tissue
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dense regular, dense irregular, elastic
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Forms delicate, thin membranes, throughout the body. The cells of this tissues mainly fibroblasts, are located some distance apart and are separated by a gel-like substance that contains many collagenous and elastic fibers that Fibroblasts serete.
Located in subcutaneous layer beneath the skin and surrounding organs. |
Areolar Connective Tissue
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fat, develops when certain cells store fat in droplets in their cytoplasm.
Cushions, insulates, store fats, beneath skin, behind eyeballs, around kidneys and heart |
Adipose Tissue
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Mainly fibroblasts, fluid to gel like matrix, collagenous fibers, elastic fibers, bind skin to structures, beneath most epithelia, blood vessels nourish nearby epithelial cells, between muscles
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Loose connective tissue
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Very thin collagenous fibers
Highly branched Form supportive networks (i.e. spleen) |
Reticular Fibers
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Bundles of microfibrils embedded in elastin
Fibers branch (complex networks) Elastic (easily stretched) Vocal cords, air passages |
Elastic Fibers
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Specialized Connective Tissues
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Cartilage
Blood Bone |
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Consists of many closely packed, thick, collagenous fibers; a fine network of elastic fibers; and a few cells, mostly fibroblasts.
Bind body parts together, tendons, ligaments, dermis, poor blood supply |
Dense Regular connective tissue
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Thicker, interwoven, and more randomly organized.
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Dense irregular connective tissue.
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Consists of yellow, elastic fibers in parallel strands or in branching networks
Attachments between bones, walls of large arteries, airways, heart |
Elastic Connective Tissue
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Rigid connective tissue. Provides support, frameworks, and attachments; protects underlying tissues and forms structural models for many developing bones.
Poor blood supply |
Cartilage
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The most common type of cartilage, has very fine collagenous fibers in its extracellular matrix and looks somewhat like light glass.
Ends of bones, nose, respiratory passages. Embryonic skeleton. |
Hyaline Cartilage
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Is more flexible than hyaline cartilage because its extracellular matrix has a dense network of elastic fibers.
Ear, larynx. |
Elastic Cartilage
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Is a very tough tissue, has many collagenous fibers. It is a shock absorber fr structures subjected to pressure.
Forms pads between the individual bones of the spinal column (intervertebral discs) |
Fibrocartilage
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The most rigid connective tissue. Hardness due to salts, such as calcium phosphate and calcium carbonate, between cells.
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Bone
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Type of connective tissue, is composed of cells suspended in a fluid extracellular matrix called plasma.
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Blood
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Cells included in Blood connective tissue.
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white blood cells, platelets, red blood cells
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Four types of membranes
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Epithelial membranes
Serous membranes Mucous membranes Cutaneous membrane |
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Thin structures that are usually composed of epithelium and underlying connective tissue.
Cover body surfaces and line body cavities. |
Epithelial membranes.
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Line the body cavities that do not open to the outside and reduce friction between the organs and cavity walls.
Cover organs of thorax and abdomen, secrete fluid |
Serous membranes
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Line the cavities and tubes that open to the outside of the body.
Oral and nasal cavities and the tubes of the digestive, respiratory, urinary, and reproductive systems. |
Mucous Membranes
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Part of the integumentary system, more commonly called the skin.
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Cutaneous membrane.
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Contractile, can shorten and thicken. three types skeletal, smooth, cardiac
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Muscle tissue
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Forms muscles that usually attach to bones and can be controlled by conscious effort. For this reason, it is often called voluntary muscle tissue. Striated.
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Skeletal Muscle
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Cells lack striations, shorter than those of skeletal muscle and are spindle-shaped, each with a single, centrally located nucleus.
Walls of organs, skin, walls of blood vessels, involuntary, not striated. |
Smooth muscle
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Is only in the heart. Its cells, striated and branched, are joined end-to-end, and interconnected in complex networks.
Involuntary, intercalated discs. |
Cardiac muscle.
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Found in the brain, spinal chord, and peripheral nerves. Basic cells are called neurons. Neuroglial cells support and bind nervous tissue components. Sensory perception, conduction of nerve impulses.
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Nervous Tissues
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