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TissueStudy
Tissues of the Integumentary System and Membranes
| Question | Answer |
|---|---|
| Simple squamous epithelium | Description:Single layer of flattened cells Disc shaped nuclei Function:Diffuses and filters, secrets lubricants Location:Kidney glomerulil air sacs of lungs; lining of heart, blood vessels; and lymphatic vessels, lining of ventral body cavity (sero |
| Simple cuboidal epithelium | Description: Single layer of cubelike cells with large, spherical central nuclei Function: Secretion and absorption Location: Kidney tubules; ducts and secretory portion of small glands; ovary surface |
| Simple columnar epithelium | Dscrptn:Single layer of tall cells, round to oval nuclei Cilia and goblet cells Function:Absorption, secretion of mucus, enzymes Location:Nonciliated type lines most of the digestive tract Ciliated lines small bronchi, uterine tubes, and parts of ut |
| Pseudostratified columnar epithelium | Description:Single cell layer,different heights Function:Secretion, particularly of mucus;propulsion of mucus by ciliary action. Location:Nonciliated type in male's sperm-carrying ducts and large glands;ciliated: trachea, most upper respiratory trac |
| Stratified squamous epithelium | Function: Protects underlying tissues in areas subjected to abrasion Location: Nonkeratinized type forms the moist linings of the esophagus, mouth and vagina; keratinized variety forms the epidermis of the skin, a dry membrane. |
| Stratified cuboidal epithelium | Description: Generally two layers of cubelike cells Function: Protection Location: Largest ducts of sweat glands, mammary glands,and salivary glands |
| Stratified columnar epithelium | Description: Several cell layers; basal cells usually cuboidal; superficial cells elongated and columnar Function: Protection, secretion Location: Rare in the body; small amounts in male urethra and in large ducts of some glands |
| Transitional epithelium | Function: Stretches readily and permits distension of urinary organ by contained urine Location: Lines the ureters, urinary bladder, and part of the urethra |
| Embyronic connective tissue | Desription: Embryonic connective tissue; gel-like ground substance containing fibers; star-shaped mesenchymal cells. Function: Gives rise to all other connective tissue types Location: Primarily in embryo |
| Connective tissue proper: loose connective tissue, areolar | Fnctn:Wraps and cushions organs;macrophages phagocytize bacteria; plays important role in inflammation; moves tissue fluid Lctin:Widely distributed under epithelia of body,e.g.forms lamina propria of mucous membranes;packages organs;surrounds capillari |
| Connective tissue proper: loose connective tissue, adipose | Function: Provides reserve fuel; insulates against heat loss; supports and protects organs Location: Under skin; around kidneys and eyeballs; within abdomen; in breasts |
| Connective tissue proper; loose connective tissue, reticular | Function: Fibers form a soft internal skeleton (stroma) that supports other cell types, including white blood cells, mast cells, and macrophages Location: Lymphoid organs (lymph nodes, bone marrow, and spleen) |
| Connective tissue proper; dense connective tissue, dense regular | Description: Primarily parallel collagen fibers, a few elastic fibers; major cel:fibroblast Function: Attaches muscles to bones or to muscles;bones to bones;withstands great tensile stress if pulled one way Location: Tendons, most ligaments, aponeur |