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28 Cards in this Set

  • Front
  • Back
groups of similar cells and extracellular products that carry out a common function, such as providing protection or facilitating body movement
study of tissues and their relationships within organs
Four principle types of tissues in the body
Epithelial, Connective, Muscle, and Nervous
Three primary germ layers are
Ectoderm, Mesoderm, and endoderm
Epithelial Tissue
lines every body surface and all body cavities
Basement Membrane
thin extracellular layer between the epithelium and the underlying connective tissue
Basal Lamina
contains collagen fibers as well as protein and carbohydrate macromolecules that are secreted by the cells of the epithelium
Simple Epithelium
one cell layer thick, and all of these epithelial cells are in direct contact with the basement membrane
Stratified Epithelium
two or more cell layers thick; only the deepest layer directly attaches to the basement membrane
Pseudostratified Epithelium
layered; cells nuclei are distributed at different levels between the apical and basal surfaces. Attached to basement membrane, although some do not reach its apical surface
Squamous Cells
flat, wide, and somewhat irregular in shape
Cuboidal Cells
about as tall as they are wide. Are not perfect cubes because edges are rounded
Columnar Cells
slender and taller than they are wide. look like a hexagon
Simple Squamous Epithelium
one layer of flattened, tightly bound cells
epithelium that lines the lumen of the blood and lymphatic vessels and that heart and its chambers
simple squamous epithelium that lines the internal walls of the pericardial, pleural, and peritoneal cavities as well as external surfaces of the visceral organs of the cavities
Simple Cuboidal Epithelium
one layer of tightly bound, cube-shaped cells
Simple Columnar Epithelium
one layer of tightly bound, tall shaped cells
Stratified Squamous Epithelium
Many layers thick; cells in outer layers are dead, flat, and contain keratin. In nonkeratinized they are alive, flat, and moist
Stratified Cuboidal Epithelium
Two or more layers of cells; apical layer of cells is cube-shaped
Stratified Columnar
two or more layers of cells;cells in apical layer are columnar-shaped
Pseudostratified Columnar Epithelium
one layer of cells of varying heights; all cells attach to basement membrane; ciliated form contains cilia and goblet cells; nonciliated form lacks cilia and goblet cells
Transitional Epithelium
multiple layers of cuboidal and rounded cells, or flattened cells; some cells may be binucleated
individual cells or multicellular organs composed predominantly of epithelial tissue
Endocrine Glands
lack ducts and secrete their products directly into the interstitial fluid and bloodstream
Exocrine Glands
originate from an invagination of epithelium that burrows into deeper connective tissues. these glands usually maintain their contract with epithelial surface by means of a duct
an epithelium-lined tube through which secretions of the gland are discharged onto the epithelial surface
Multicelluar Exocrine Glands may be classified according to three criteria:
form and structure, type of secretion, or method of secretion