Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
Histology |
a branch of anatomy concerned with the study of the microscopic structure of the tissues |
|
|
tissue |
a group of interconnected cells that perform a similar function |
|
|
cells |
the smallest structural unit of living matter capable of functioning independently |
|
|
extracellular matrix |
a mesh-like material that surrounds cells |
|
|
epithelial tissue |
tissue that makes up the outer surface of the body |
|
|
basal lamina |
thin tough sheet that separates the epithelial cells and CT |
|
|
keratinization |
process that cells become tougher and waterproof |
|
|
keratinized epithelial cells |
no nuclei, tough, resistant layer |
|
|
non-keratinized epithelial cells |
cells that have a nuclei, cushion layer |
|
|
connective tissue |
fills spaces between tissues and organs in the body |
|
|
epithelial connective tissue interface |
boundary where the epithelial and connective tissues meet |
|
|
connective tissue papillae |
finger like extensions that extend up into epithelium |
|
|
cell junctions |
cellular structures that mechanically attach a cell and its cytoskeleton to its neighboring cells or to basal lamina |
|
|
desmosome |
cell junctions that connects two epithelial cells and their cytoskeletons together |
|
|
hemidesmosome |
connects epithelial cells to basal lamina |
|
|
gingival epithelium |
stratified squamous epithelium SE, JE, OE |
|
|
Internal basal lamina |
a thin mat of extracellular matrix between epithelial of the junctional epithelium and the tooth surface |
|
|
external basal lamina |
a thin mat of extracellular matrix between between epithelial cells of junctional epithelial and tooth surface |
|
|
Supragingival fiber bundles |
gingival fibers a network of replica collagen fiber bundles in the gingival connective tissue located coronal to the crest of the alveolar bone |
|
|
Collagen fibers |
fibers that form a dense network of strong, ropelike cables that secure and hold the gingival connective tissue together |
|
|
Dentogingival unit |
composed of the junctional epithelium and the gingival fibers the unit acts to provide structural support to the gingival tissue |
|
|
Periosteum |
a dense membrane composed of fibrous connective tissue that closely wraps the outer surface of the alveolar bone; it consists of an outer layer of collagenous tissue and an inner layer of fine elastic fibers |
|
|
PDL |
a thin sheet of fibrous connective tissue that surrounds the roots of the teeth and joins the root cementum with the bone of the tooth socket |
|
|
sharpeys fibers |
the ends of the PDL fibers that are embedded in the cementum and alveolar bone |
|
|
cementum |
a mineralized layer of connective tissue that covers the root of the tooth, anatomically it is part of the tooth as well as the periodontium |
|
|
Overlap |
60% of all cases - cementum overlaps enamel |
|
|
meet |
30% of cases - they meet |
|
|
gap |
10% of cases - small gap |
|
|
radiolucent |
easily penetrated by X-ray - darker or black structures |
|
|
radiopaque |
absorb or resist passage of X-rays - white structures |
|
|
cortical bone |
a layer of compact bone that forms the hard outer wall of the mandible and maxilla on facial and lingual aspects of the jaw - gives support to the socket |
|
|
crestal irregularities |
the appearance on a dental radiograph of breaks or fuzziness instead of a nice clean line at the crest of the interdental alveolar bone |
|
|
triangulation |
the appearance on dental radiographs of widening of the PDL space; caused by resorption of bone along either mesial or distal aspect of the interdental crestal bone |
