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26 Cards in this Set
- Front
- Back
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What is the transitional zone between the skin and the mucous membrane?
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Vermilion Zone
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What is the slight projection in the midline of the upper lip?
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Tubercle
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What is the vertical groove above the lips?
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Philtrum
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What are the important structures of the lips?
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Superior Labial Frenulum
Inferior Labial Frenulum |
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What are the important structures of the cheeks?
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Glands (molar and parotid salivary)
Buccal Fat Pad (suckling pad) |
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What are the 5 muscles of the face and mouth?
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Orbicularis Oris, transverse, angular, vertical, parallel.
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What is the function of the Orbicularis Oris?
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Sphincter muscle, closes the mouth and puckers the lips.
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What are the 2 transverse facial muscles?
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Buccinator, Risorius.
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What is the function of the Buccinator?
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Compresses lips and cheeks against the teeth and draws the corners of the mouth laterally.
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What is the function of the Risorius?
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Draws the mouth angle lateralward.
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Angular muscles produce?
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Expressions like smiling and frowning.
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What are the 5 angular muscles of the face?
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Levator Labii Superior, Levator Labii Alaque Nasi, Zygomatic Major, Zygomatic Minor, Depresspor Labii.
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What is the function of the Levator Labii Superior?
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To raise the upper lip.
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What is the function of the Levator labii Superior Alaeque Nasi?
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To raise the upper lip and dilates the nostrils.
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What is the function of the Zygomatic Minor?
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To raise the upper lip.
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What is the function of the zygomatic major?
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To draw the angle of the mouth upward and lateralward. (big smile)
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What is the function of the Depressor Labii?
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To draw the lower lip downward and lateralward.
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What are the 3 muscles vertical muscles of the face?
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Mentalis, Depressor Anguli Oris, Leavator Anguli Oris.
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What is the function of the Menatlis?
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To raise the lower lip and wrinkles the chin.
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What is the function of the Depressor Anguli Oris?
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To Compress the lips by drawing the upper lips down on the lower lips.
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How do the vertical muscles of the face function?
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They enter corners of the mouth directly from above and below to produce facial expression.
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How do the angular muscles of the face function?
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They approach the corners of the mouth obliquely from above and below to produce facial expressions.
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How do the transverse muscles of the face funtion?
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They are horizontal from their origin and insert into the orbicularis oris. They produce bilabial stops and nasal sounds.
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What is the functionof the parallel facial muscles?
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They are not truly lip muscles but are superficial muscles in the region; they include the Incisivus labii superior, and the incisivus labii inferior.
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What is the function of the incisivus labii superior?
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To help pucker and round the lips.
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What is the function of the Incisivus Labii Inferior?
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To draw in the corner of the mouth medially and downward.
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