18 Questions
What is the histological structure of the lingual tonsil?
It is covered by stratified squamous non-keratinized epithelium with germinal centers and lymphatic tissue between them.
Which of the following is NOT a characteristic of the attachment (junctional) epithelium?
The basal cell layer is formed of columnar cells with their long axes perpendicular to the tooth surface and resting on a smooth basement membrane.
What is the function of the lingual tonsil?
The lingual tonsil is part of the lymphatic system and helps in the immune response.
What happens if the basement membrane of the attachment (junctional) epithelium becomes irregular?
It indicates the presence of inflammation.
What is the main structural difference between the basal layer and the layers above it in the attachment (junctional) epithelium?
The basal layer is formed of cuboidal cells with their long axes perpendicular to the tooth surface, while the layers above are formed of flat cells with wide intercellular spaces and few desmosomes.
What is the main function of the ducts from the underlying Weber mucous salivary glands that open into the lingual crypts?
To secrete mucus into the lingual crypts.
What is the significance of the lingual tonsil being part of the lymphatic ring between the mouth, nose, and pharynx?
It helps in the immune response against pathogens entering the body through the mouth and nose.
What is the main structural difference between the attachment (junctional) epithelium and the gingival epithelium?
The attachment epithelium is formed of stratified squamous non-keratinized epithelium, while the gingival epithelium is formed of stratified squamous non-keratinized epithelium.
What is the significance of the varying length of the attachment (junctional) epithelium?
It allows for the attachment of the tooth to the gingiva to be adjustable.
What type of epithelium covers the lingual follicles in the lingual tonsil?
Stratified squamous non-keratinized epithelium
What are the spaces filled with between the germinal centers in the lymphatic tissues of the lingual tonsil?
Interstitium
What is the structural composition of the attachment (junctional) epithelium at the dento-gingival junction?
Stratified squamous non-keratinized epithelium
What is the consequence of inflammation if the basement membrane of the attachment (junctional) epithelium becomes irregular?
Attachment loss
Which salivary glands have ducts opening into the bottom of the lingual crypts?
Minor salivary glands
What is the length range of the attachment (junctional) epithelium from the bottom of the gingival sulcus towards CEJ or below it?
$2-4$ mm
Which layer in the attachment (junctional) epithelium is formed by flat cells with wide intercellular spaces and few desmosomes?
$2^{nd}$ layer
What does an increase in age lead to in terms of layers and cell types in the attachment (junctional) epithelium?
Increase in layers, increase in cell size
What is formed if an irregular basement membrane is present in the attachment epithelium?
Inflammation
Explore the anatomy of the lingual tonsil, focusing on its structure, histology, and function. Learn about lingual follicles, lingual crypts, and the composition of lymphatic tissues in the lingual tonsil.
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