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47 Cards in this Set
- Front
- Back
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histology
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study of tissues
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biopsy
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process of removing tissue samples from patients surgically or with a needle for diagnostic purposes
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autopsy
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examination of organs of a dead body to determine the cause of death or to study the changes caused by a disease
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endoderm
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innermost of the three germ layers of an embryo
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ectoderm
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outermost of the three germ layers of an embryo
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neuroectoderm
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becomes nervous system in embryo
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epithelium
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protective covering of surfaces
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apical surface (free surface)
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part of epithelium not attached to other cells
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lateral serface
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part of epithelium attached to other cells
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basal surface
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part of epithelium attached to basement membrane
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simple epithelium
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single layer of cells
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stratified epithelium
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more than one layer of cells
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pseudo-stratified columnar epithelium
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appears to be stratified but is not
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goblet cells
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contain organelles responsible for the synthesis and secretion of mucus
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desmosomes
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disk shaped structures with especially adhesive glycoprotiens that bind cells to one another and intermediate filaments that extend tinto the cytoplasm of the cells
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hemidesmosomes
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one half of desmosome, attaches epithelial cells to the basement membrane
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tight junctions
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hold cells together and form and permeability barrier.
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zonula adherns
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small zone between the plasma membranes that holds cells together
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zonula occludens
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junction between celss in which the plasma membranes may be fused; occludes or blocks off the space between cells
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gap junction
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small channel between cells that allows the passage of ions and small molecules between cells; provides means of intercellular communication
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intercalated disks
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gap junctions between muscle cells
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glands
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secretory organs composed of epithelium with a supporting network of connective tissue
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exocrine glands
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gland that secretes to a surface or outward through a duct
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endocrine glands
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ductless gland that secretes a hormone internally, usually into the circulation
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hormones
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cellular products of endocrine glands
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multicellular glands
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exocrine glands composed of many cells
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unicellular glands
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exocrine glands composed of a single cell
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goblet cells
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unicellular glands that secrete mucus
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tubules
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small tubes
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acini
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saclike structures
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alveoli
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hollow sacs
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merocrine glands
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secrete products with no loss to the cell
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apocrine glands
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discharge fragments of the gland cells during secretion
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holocrine glands
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shed entire cells, eg. sebatious glands
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functions of connective tissue
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1. enclosing and seperating
2. connecting tissues to one another 3. supporting and moving 4. storing 5. cushioning and insulating 6. transporting 7. protecting |
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blasts
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suffix means: create the matrix
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cytes
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suffixs means: maintains the matrix
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clasts
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suffix means: breaks the matrix down for remodeling
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adipose or adipocytes
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fat cells that contain large amounts of lipid
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mast cells
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contain chemicals such as heparin, histamine and proteolytic enzymes which are released in response to injury
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leukocytes
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white blood cells
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macrophages
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found in connective system
protect against infection |
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undifferentiated mesenchymal cells
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stem cells
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stem cells
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embryotic cells that persist in adult connective tissue
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collagen fibers
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ropelike protein of extracellular matrix
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reticular fibers
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fine network of cells or collagen fibers
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elastin
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yellow, elastic, fibrous mucoprotein that is the major connective tissue protein of elastic structures
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