Understanding Skin Cells

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38 Questions

Which type of cells are larger than melanocytes and Langerhans cells and are the main type of cells in the gingival epithelium?

Keratinocytes

What is the main function of the gingival epithelium?

To protect deep structures

Which intercellular connection is more common between keratinocytes?

Desmosomes

Which cells are responsible for synthesizing melanin?

Melanocytes

Which type of cells are present at all suprabasal levels and act as antigen-presenting cells for lymphocytes?

Langerhans cells

Which type of keratinization is characterized by the presence of a well-defined stratum granulosum layer?

Orthokeratinized

Which type of keratinization is characterized by the absence of nuclei in the cells of the stratum corneum?

Orthokeratinized

Which type of epithelium is found in the lining mucosa, such as alveolar mucosa?

Nonkeratinized

Which area of the oral cavity is highly keratinized?

Palate

What happens to the degree of keratinization in the gingiva with older age?

It diminishes

What is the main function of the gingival epithelium?

All of the above

What happens to the degree of keratinization in the gingiva with the onset of menopause?

Decreases

Which type of keratinization is characterized by intermediate/incomplete stage of keratinization and are the most prevalent form of keratinization in the gingival tissue

Parakeratinized

Which area of the oral cavity is Moderately keratinized?

Gingiva

Which type of keratinization is characterized by the presence of a superficial horny layer similar to that of skin and is the complete stage of keratinization? Also found in some areas of outer gingival epithelium.

Orthokeratinized

Which type of epithelium are present in sulcular epithelium?

Nonkeratinized stratified squamous epithelium

Where does the sulcular epithelium extend from and to?

From the coronal aspect of the junctional epithelium to the crest of the gingival margin

What can pass through the sulcular epithelium and into the gingiva?

Bacterial products

What can seep from the gingiva through the sulcular epithelium and into the sulcus?

Gingival fluid

What is the location of the junctional epithelium in healthy tissue?

At the cementoenamel junction

What is the width of the marginal gingiva?

1 mm

What demarcates the attached Marginal from the attached gingiva?

Free gingival groove

What is the depth of a normal sulcus based on histological findings?

0-2 mm

Which term describes the gingiva that is tightly bound to the underlying periosteum of the alveolar bone?

Attached gingiva

Where is the mucogingival junction located in the buccal aspect of the oral cavity?

At the junction of the lingual alveolar mucosa

What is the main function of the wide zone of attached gingiva?

All of the above

In a healthy person, what does the distance from the bottom of the gingival sulcus to the mucogingival junction represent?

The width of the attached gingiva

What can the attached gingiva be attached to?

Both the alveolar bone and the tooth surface

What is the role of the attached gingiva in maintaining the periodontium in health?

To protect the periodontium from injury

Where does the lingual aspect of the attached gingiva tend to blend with in the maxilla?

The palatal mucosa

Which fluid seeps through the gingival sulcus to the oral cavity and moves from the intravascular space to the extravascular space?

Gingival flluid

What is the composition of gingival fluid in healthy gingiva?

Mainly serum

What is the composition of gingival fluid in inflamed gingiva?

Mainly protein and cells, CT, epithelium, inflammatory cells and microbial flora

Which cells are the main cellular component of gingival connective tissue?

Fibroblasts

Which type of fibers are synthesized by fibroblasts in gingival connective tissue?

All of the above

What is the repair capacity of gingival connective tissue compared to periodontal ligament (PDL) and epithelial tissue?

Lower repair capacity than PDL and epithelial tissue

What is the location of the junctional epithelium in healthy tissue?

Attached to the cementum

What is the main function of the gingival epithelium?

Maintain the structure of the junctional epithelium

Test your knowledge on the structure and function of keratinocytes, melanocytes, and Langerhans cells with this quiz! Learn about their differentiation, intercellular connections, and unique characteristics. Perfect for anyone studying dermatology or cellular biology.

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