Term
| The lip interior to the vermillion border is parakeratinized, stratified squamous epithelium. What does this mean? |
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Definition
| There is no stratum lucidum and the cells retain their nuclei. |
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Term
| What are the 3 specialized mineralized tissues that contribute to the teeth? |
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Definition
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Term
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Definition
| Enamel, cementum and dentin are acellular. Prolonged exposure to bacterial enzymes will demineralize them creating carries. |
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Term
| Describe the number and type of deciduous teeth in a set. |
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Definition
Desiduous (childhood)
-2 incisors
-1 canine
-2 molars |
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Term
| Describe the number and type of adults teeth in a set. |
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Definition
-2 incisors
-1 canine
-2 premolars
-3 molars |
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Term
| Describe the process for formating teeth. |
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Definition
-epithelium involutes into a bell in the undifferentiated tissues of the oral cavity
-This bell surrounds the mesenchyme
-bell detaches from surface epithelium |
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Term
| Where do ameloblasts differentiate at? What is their function? |
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Definition
Differentiate at the top of the bell.
Ameleoblasts lay down enamal. |
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Term
| Where do odontoblasts differentiate at? What is their function? |
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Definition
| Odontoblast form at a lower portion of the bell and form dentin |
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Term
| In tooth formation, what forms the dental pulp? |
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Definition
| Loose connective tissue that gets surrounded by the bell |
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Term
| What allows wiggle room for the teeth? |
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Definition
| The periodontal ligament that interfaces between the alveolar bone and cementum |
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Term
| What type of muscle is in the tongue? |
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Definition
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Term
| What type of epithelium is on the tongue? |
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Definition
| Keratinized stratified squamous epithelium. |
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Term
| What are the four types of taste buds? |
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Definition
Filiform:
Fungiform:
Circumvalate.
Foliate |
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Term
| Descrie the structure of foliate papillae and their function. |
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Definition
Longitudinal folds on te lateral aspect of the tongue
Have laterally located tastebuds and secretory glands |
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Term
| Descrie the structure of circumvallate papillae and their function. |
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Definition
Large circular taste buds
Near the posterior 1/3 of the tongue
Have laterally located taste buds
Also have secretory glands |
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Term
| Describe the structure of fungiform papillae and their function. |
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Definition
Appear as little pale dots on tongue
Have apical taste buds |
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Term
| Descrie the structure of filiform papillae and their function. |
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Definition
Filiform papillae lack taste buds.
Sharp extensions covering most of the tongue |
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Term
| How are tastants removed from tastes buds? |
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Definition
| Von Ebner, or lingual salivary glands, flush food from the taste buds |
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Term
| What are the lymphoid tissues that make up Waldeyer's ring? |
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Definition
Pharyngeal tonsil
Tubal tonsil
Palatine tonsil
Lingual tonsil
Palatine tonsil
Tubal tonsil |
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Term
| What tonsils are located at the back of the mouth and most often become infected? |
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Definition
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Term
| What are the two function of the mucosa in the gut tube? |
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Definition
Extract nutrients
Protect the body from pathogens |
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Term
| What are the three layers of the mucosa of the gut? |
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Definition
Epithelium-either stratified squamous or simple cuboidal
Lamina propria-loose connective tissue
Muscularis mucosae-smooth muscle |
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Term
| What is added to the bolus in the duodenum? |
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Definition
| Bile and pancreatic enzymes |
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Term
| Where does most absorption occur? |
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Definition
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Term
| How is the gut protected from pathogens? |
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Definition
-Tight junction between epithelial cells seal environments from each other
-enterocytes pump antibodies into the lumen
-immune and inflammatory cells can migrate into and through the lamina propria to ract to pathogens |
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Term
| What does the submucosa of the gut consist of? |
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Definition
-Large vessels-lymph, arteries, veins
-Submucosal ganglion (nerve cells)
-Submucosal glands
-large lymph nodules |
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Term
| What are the layers of muscularis externa? |
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Definition
Inner circular layer
Myenteric ganglia-nerve cells
Outer longitundinal layer |
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Term
| What are some characteristics of the esophagus histologically? |
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Definition
Covered by nonkeratinized stratified squamous epithelium
Lamina propria contains catdiac glands near the stomach
Submucosa contains esophageal glands througout
Muscularis externa has an inner circular and outer longitudinal layer |
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