embryo ch. 9 oral mucosa
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The oral mucosa is the tissue that lines the _______ _________.
What three layers does it have?
- oral cavity
- 1. epithelium
- 2. basement membrane
- 3. lamina propria
What is the new name for the connective tissue proper?
What are the layers of the lamina propria?
- papillary layer
- capillary plexus
- dense layer
The loose connective tissue with "papilla" is the _________ layer.
It has ___________ projections into the overlying __________.
The capillary system that runs between the two layers and sends more capillaries up into each papilla
Dense Connective Tissue
Submucosa _____ or ______ not be present deep to the _______ layer.
It can be ________ tissue, _______ glands, or muscle.
If the __________ is not present, the connective tissue connects directly to the bone and becomes the ___________ covering for the _____.
What are the three different classifications of oral mucosa?
- lining mucosa
- masticatory mucosa
- specialized mucosa
Which mucosa has a softer surface texture, moist, and able to stretch/compress?
Which mucosa has a rubbery surface texture and is resilient
Which mucosa has lingual papillae?
What are the three types of epithelium of the oral mucosa?
- nonkeratinized stratified squamous epithelium
Nonkeratinized stratified squamous epithelium:
- found in the lining mucosa
- MOST COMMON in the oral cavity
What are the three layers of the nonkeratinized stratified squamous epithelium?
- basal layer
- intermediate layer
- superficial layer
The basal layer is the _______. it is a _______ layer of cells that sit above the ________ ___________.
- basement membrane
What two functions does the basal layer produce?
- lamina lucida of the basement membrane
- new epithelial cells by mitosis. (no more mitosis once you leave this layer)
The intermediate layer is the ______ layer. The cells have migrated __________ from the basal layer.
It makes up the bulk of the __________.
The superficial layer is the _____ layer. Cells have continued to _______ and they've gotten_______ as they move up. They are now ________.
When the superficial layer become squames, what happens?
They die and are shed from the tissue
Found in the masticatory mucosa. Least common in the oral cavity:
Orthokeratinized stratified squamous epithelium
What are the four new layers and names of the orthokeratinized s.s.e.?
- basal layer
- prickle layer
- granular layer
- keratin layer
The basal layer in the orthokeratinized s.s.e. is the _______.
The prickle layer is similar to the __________ layer. it is called prickle because when you dry it out to look under a microscope, the cells ______ but maintain their __________.
Which layer of the orthokeratinized s.s.e. makes up the bulk of the epithelium?
The granular layer is similar to the ________ layer. In these cells, we see _____________ granules that will eventually __________ the cell.
- (like jello powder and jello)
The keratin layer is similar to the ___________ layer. They have migrated to the _____, __________ out, and filled with _________. They have no _______.
The keratin cells _____ and are ______ from the tissue.
Parakeratinized stratified squamous epithelium are ______ common than the orthokeratinized. Same concept, but keratin cells ____ nuclei.
- (they are rubbed off before they get all their keratin)
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