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RUSOM_GI Histo II

Oral Cavity

QuestionAnswer
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)
Created by: 1683642184
 

 



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