moncadadebbie6868 moncadadebbie6868
  • 29-10-2019
  • Social Studies
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select all that are true about sphincters.
A) They are located at orifices along the digestive tract.
B) They help maintain posture.
C) They control the passage of materials along the digestive tract.
D) They are composed of muscle arranged in circular bands.

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shanta1982
shanta1982 shanta1982
  • 29-10-2019
A is correct c is correct and d is correct
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