Features Of Healthy Oral Mucosa
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Features of Healthy Oral Mucosa Buccal
parakeratinised epithelium - the keratinocytes maintain their nuclei prickle cell layer basal layer rete pegs lamina propria (underlying connective tissue) Tongue
See labelled slides below.
parakeratinised epithelium (surface layer) prickle cell layer basal cell layer
lamina propria blood vessel endothelial cells striated muscle
Oral Epithelium The oral epithelium is a stratified squamous epithelium. It consists of four layers:
•
The keratinised layer at the surface (or stratum corneum)
•
The granular cell layer (or stratum granulosum)
•
The prickle cell layer (or stratum spinosum)
•
The basal layer (or stratum basale)
Lamina Propria The lamina propria is the connective tissue under the epithelium. It consists of:
•
The papillary layer between the rete ridges
•
The reticular layer (deeper)
•
Fibroblasts
•
Endothelial cells (that line the blood vessels)
•
Nerves
•
Inflammatory cells
Submucosa On the deep aspect we may see:
•
Striated muscle
•
Minor salivary glands
•
Fat
•
Periosteum and bone
parakeratinised epithelium - the keratinocytes maintain their nuclei prickle cell layer basal layer rete pegs lamina propria (underlying connective tissue) Tongue
See labelled slides below.
parakeratinised epithelium (surface layer) prickle cell layer basal cell layer
lamina propria blood vessel endothelial cells striated muscle
Oral Epithelium The oral epithelium is a stratified squamous epithelium. It consists of four layers:
•
The keratinised layer at the surface (or stratum corneum)
•
The granular cell layer (or stratum granulosum)
•
The prickle cell layer (or stratum spinosum)
•
The basal layer (or stratum basale)
Lamina Propria The lamina propria is the connective tissue under the epithelium. It consists of:
•
The papillary layer between the rete ridges
•
The reticular layer (deeper)
•
Fibroblasts
•
Endothelial cells (that line the blood vessels)
•
Nerves
•
Inflammatory cells
Submucosa On the deep aspect we may see:
•
Striated muscle
•
Minor salivary glands
•
Fat
•
Periosteum and bone
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