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26 Cards in this Set
- Front
- Back
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Oral cavity proper |
Area within the dental arches |
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Vestibule |
Area outside the dental arches |
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The cavity starts at..... and finishes at..... |
Starts at the lip and finishes at the tonsils |
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Junction between the dry epithelium of the face and moist epithelium of the oral cavity is called? |
Vermillion zone |
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What is the Philtrum? |
Indentation at the midline and derived form medial nasal processors |
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Describe the tongue |
As an epithelial sac filled with striated muscles |
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What is the V shaped groove called that splits the anterior 2/3s and posterior 1/3 of the tongue |
Sulcus terminalis |
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Where the 2 parts of the V merge on the tongue is called? |
The foramen caecum |
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The posterior 1/3 consists of .....tissue covered by....... and is found in the oral portion of the throat |
Lymphoid tissue and non keratinised mucosa |
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What are the 4 types of papilla on the tongue |
Filiforn, fungiform, circumvallate and foliate |
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Which two papillae have taste buds? And what are they innervated by? |
Circumvallate-glossopharyngeal nerve and foliate- glossopharyngeal |
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List the extrinsic muscles of the tongue |
Extrinsic- genioglossus, styloglossus, hyloglossus, palatoglossus
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The genioglossus does what movement? |
Pull tongue forward to poke it out |
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List the intrinsic muscles of the tongue |
Superior longitudinal, inferior longitudinal, vertical, transverse |
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What does the transverse muscle do? |
Narrows and lengthens the tongue |
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Major supply to tongue from the lingual arteries, what drains the tongue? |
Venous drainage via the lingual vein into the internal jugular vein |
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What does the Hypoglossal XII nerve do? |
Motor supply to all muscles except the palatoglossus |
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What are the 3 layers of the oral mucosa? |
Epithelium- surface layer Lamina propria- fibrous layer below Submucosa-loose connective tissue beneath |
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Epithelium of the oral mucosa is made up of.....and what are the 4 epithelium layers? |
Stratified squamous epithelium Epithelium split into 4 layers- basal Spinous Granular Cornified or superficial layers |
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What does the lamina propria contain? |
Connective tissue Fibrous tissue layer beneath Very vascular Lymphatic vessels Nerve endings |
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Submucosa layer contains? |
Loose connective tissue that's fastens the mucosa to the structures beneath Contains minor mucus secreting salivary glands Larger blood vessels Larger nerves Fatty tissue |
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What are the types of mucosa? |
Masticatory mucosa Lining mucosa Gustatory mucosa (specialised) |
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What finger like structure projects up into the dermis and increases the area of contact between the layers of skin and help prevent the epidermis shearing off? In the mouth they also attach gingiva to alveolar bone and interact with the dermis to get nourishment? |
Rete Pegs |
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Where does the masticatory mucosa cover and what layers does it have? |
Covers hard palate and gingiva Has a basal layer, spinous layer, granular layer and cornified layer |
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Lining mucosa is made up of what epithelium tissue and what layers does it contain? And where Is it found? |
Non- keratinised stratified squamous epithelium Basal layer, spinous layer, superficial layer Inside cheeks, lips, soft palate, floor of mouth |
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What is the mucosa lining the tongue? |
Gustatory mucosa Keratinised |
