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Ka Ka
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6 years ago
The orbicularis oris
 
  a. Is a circular muscle that makes up the upper and lower lips.
  b. Is an isolated muscle that moves the upper lip.
  c. Is a small flap of tissue that connects the lower lip to the mandible.
  d. Is what gives the lips their characteristic red color.
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6 years ago
A.
Ka Author
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6 years ago
I appreciate what you did here
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