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RUSOM_GI Histo II
Oral Cavity
Question | Answer |
---|---|
What type of digestion takes place during mastication? | Mechanical digestion |
What type of digestion takes place when saliva is released in the mouth? | Chemical digestion |
What type of epithelia is found in the soft palate? | Parakeratinized/ masticory mucosa |
What type of epithelia is found in the hard palate? | Non-keratinized epithelium/lining mucosa |
In oral mucosa, what does lamina propria attach to? | Underlying bone or muscle |
What type of epithelia is found on the dorsal surface of the tongue? | Parakeratinized stratified squamous/ masticory mucosa |
What are the contents of the external aspect of the lip? | Keratinization, hair follicle, thin skin |
What are the contents of the internal aspect of the lip? | Minor salivary glands, labial mucosa |
What are the contents of the vermillion zone of the lip? | No glands, hair, pink zone, thin skin |
What type of epithelium is found in the filiform papillae? | Keratinized stratified squamous |
What type of epithelium is found in the fungiform papillae? | Non-keratinized/ lightly keratinized stratified squamous |
What type of epithelium is found in the circumvallate papillae? | Non-keratinized stratified squamous |
What is the shape of fungiform papillae? | Large, mushroom shape |
What is the shape of the circumvallate papillae? | Large, mushroom shape |
Which type of papillae does not have taste buds? | Filiform papillae |
Which type of papillae is rudimentary in adults? | Foliate papillae |
What is the shape of the foliate papillae? | Leaf-like |
Where are foliate papillae found? | On the lateral side of the tongue |
Which types of papillae have taste buds? | fungiform papillae & circumvallate papillae |
Which condition is caused by the degeneration/loss of filiform papillae? | Geographic tongue/ benign migratory glossitis |
Which condition is caused by having filiform papillae that are too long? | Hairy tongue |
Which nerve innervates the oral pharynx? | CN X (vagus n) |
Which nerve innervates the posterior 1/3 of the tongue? | CN IX (glossoppharyngeal n) |
Which nerve innervates the anterior 2/3 of the tongue? | CN VII (facial n) |
Which ganglia of the vagus nerve innervates the oral pharynx? | Jugular/ nodose ganglia |
Which ganglia of the glossopharyngeal nerve innervates the posterior 1/3 of the tongue? | Jugular/ petrous ganglia |
Which ganglia of the facial nerve innervates the anterior 2/3 of the tongue? | Geniculate ganglia |
Which taste sensation recognizes gluatamate? | Umami (Chinese food) |
Where are the minor salivary glands located? | IN the lamina propria of submucosa |
Where are the major salivary glands located? | OUTSIDE of the lamina propria of submucosa |
Which type of gland contains a lot of adipose tissue? | Parotid gland |
Which type of gland is ONLY serous-secreting? | Parotid gland |
Which type of gland is MOSTLY serous-secreting, but also mucus-secreting? | Submandibular gland |
Which type of gland is MOSTLY mucus-secreting, but also serous-secreting? | Sublingual gland |
Which condition is caused by the rupture of a duct, in which saliva spills from minor salivary glands? | Mucocele |
Which condition is caused by mucoceles in the floor of the mouth? | Ranula |
Which type of ducts | |
What type of digestion takes place during mastication? | Mechanical digestion |
What type of digestion takes place when saliva is released in the mouth? | Chemical digestion |
What type of epithelia is found in the soft palate? | Parakeratinized/ masticory mucosa |
What type of epithelia is found in the hard palate? | Non-keratinized epithelium/lining mucosa |
In oral mucosa, what does lamina propria attach to? | Underlying bone or muscle |
What type of epithelia is found on the dorsal surface of the tongue? | Parakeratinized stratified squamous/ masticory mucosa |
What are the contents of the external aspect of the lip? | Keratinization, hair follicle, thin skin |
What are the contents of the internal aspect of the lip? | Minor salivary glands, labial mucosa |
What are the contents of the vermillion zone of the lip? | No glands, hair, pink zone, thin skin |
What type of epithelium is found in the filiform papillae? | Keratinized stratified squamous |
What type of epithelium is found in the fungiform papillae? | Non-keratinized/ lightly keratinized stratified squamous |
What type of epithelium is found in the circumvallate papillae? | Non-keratinized stratified squamous |
What is the shape of fungiform papillae? | Large, mushroom shape |
What is the shape of the circumvallate papillae? | Large, mushroom shape |
Which type of papillae does not have taste buds? | Filiform papillae |
Which type of papillae is rudimentary in adults? | Foliate papillae |
What is the shape of the foliate papillae? | Leaf-like |
Where are foliate papillae found? | On the lateral side of the tongue |
Which types of papillae have taste buds? | fungiform papillae & circumvallate papillae |
Which condition is caused by the degeneration/loss of filiform papillae? | Geographic tongue/ benign migratory glossitis |
Which condition is caused by having filiform papillae that are too long? | Hairy tongue |
Which nerve innervates the oral pharynx? | CN X (vagus n) |
Which nerve innervates the posterior 1/3 of the tongue? | CN IX (glossoppharyngeal n) |
Which nerve innervates the anterior 2/3 of the tongue? | CN VII (facial n) |
Which ganglia of the vagus nerve innervates the oral pharynx? | Jugular/ nodose ganglia |
Which ganglia of the glossopharyngeal nerve innervates the posterior 1/3 of the tongue? | Jugular/ petrous ganglia |
Which ganglia of the facial nerve innervates the anterior 2/3 of the tongue? | Geniculate ganglia |
Which taste sensation recognizes gluatamate? | Umami (Chinese food) |
Where are the minor salivary glands located? | IN the lamina propria of submucosa |
Where are the major salivary glands located? | OUTSIDE of the lamina propria of submucosa |
Which type of gland contains a lot of adipose tissue? | Parotid gland |
Which type of gland is ONLY serous-secreting? | Parotid gland |
Which type of gland is MOSTLY serous-secreting, but also mucus-secreting? | Submandibular gland |
Which type of gland is MOSTLY mucus-secreting, but also serous-secreting? | Sublingual gland |
Which condition is caused by the rupture of a duct, in which saliva spills from minor salivary glands? | Mucocele |
Which condition is caused by mucoceles in the floor of the mouth? | Ranula |
Which type of ducts have low cuboidal epithelia? | Intercalated ducts |
Which type of ducts have simple cuboidal epithelia? | Striated ducts |
Which type of ducts modify saliva? | Striated ducts |
Which type of ducts are within the connective tissue of the gland? | Interlobular/ excretory ducts |
What is the most copious secretion of the body? | Saliva |
What is found in hypotonic fluid? | Mucin (lubricating proteoglycans) |
What are the components of saliva? | 1. Hypotonic fluid 2. Amylase 3. Lysozyme 4. Antibodies (sIgA) 5. Salivary proteins |
Where are sIgA found? | 1. Saliva 2. Cells of small intestine |
How many deciduous teeth are there? | 20 |
How many permanent teeth are there? | 32 |
What is found in the primary palate? | 4 incisor teeth |
What condition involves missing teeth? | Hypodontia |
What condition involves an extra tooth, between the incisors? | Hyperdontia (often as a birth defect) |
What are the 3 hard tissues of teeth? | 1. Enamel 2. Dentin 3. Cementum |
What type of bone is found in the mandible & maxilla? | Alveolar bone |
What stem cell produces enamel? | Ameloblasts |
What stem cell produces dentin? | Odontoblasts |
What stem cell produces cementum? | Cementoblasts |
Where are ameloblasts located? | On the surface of the crown |
When do ameloblasts die? | When the tooth erupts |
How is enamel lost? | During life, by abrasion |
What is the hardest tissue in the body? | Enamel |
Is enamel repairable? | No |
Is dentin repairable? | Yes |
Is cementum repairable? | Yes |
Where is cementum found? | On the outer surface of the root |
What does cementum produce? | Collagen, osteocalcin, sialoprotein |
What are the 3 types of tooth-supporting tissue? | 1. Gingiva 2. Peridontal ligament 3. Alveolar bone |
What is gingiva? | Gums |
What is the peridontal ligament? | Dense connective tissue, GAGs, Sharpey's fiber |
What is the alveolar bone? | Immature bone; can be easily remodeled |
What causes scurvy? | 1. Protein deficiency 2. Vitamin C deficiency |
What is the function of Vitamin C? | It cross-links collagen |
What week of development do teeth begin to form? | 6th week |
What is the embryological derivative of enamel? | Ectoderm |
What is the embryological derivative of dentin? | NCC |
What is the embryological derivative of pulp? | NCC |
What is the embryological derivative of cementocytes? | Mesoderm |
What is the embryological derivative of periodontal ligament? | Mesoderm |
What is the embryological derivative of ameloblasts? | Ectoderm |
What is the embryological derivative of odontoblasts? | NCC |
What is the embryological derivative of cementoblasts? | Mesoderm |
Which tooth derivatives originate from the ectoderm? | Ameloblast, Enamel |
Which tooth derivatives originate from the NCC? | Pulp, Odontoblast, Dentin |
Which tooth derivatives originate from the mesoderm? | Cementoblasts, Cementocytes, Periodontal ligament |
What is the major symptom of Xerosis/ Sjogren's syndrome? (within te oral cavity) | Dry mouth (Non-oral cavity = dry eyes, skin, nose, vagina) |
What is the mechanism for Xerosis/ Sjrogen's syndrome? | Autoimmune disease; immune cells attack and destroy exocrine glands (that produce saliva, tears, etc.) |
What is gingivitis? | Inflammation of gum tissue |
What is periodontitis? | Long term, soft tissue damage in the oral cavity |
What are caries? | Cavities; soft decayed area in tooth (*Progressive decay = death of tooth) |
What is a malocclusion? | Incorrect alignment between 2 dental arches |
What condition of the oral cavity decreases the distance between the nose and chin? | Overite/ underbite |
How can an overbite/ underbite be corrected? | Surgery |
What is the most common infectious disease? | Caries (the bacteria thrive on sugar) |
What is mesenchyme? | The rest of the tooth (not enamel) |