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    Exam 8: Cardiovascular System
  5. Question
    Which Circular Muscle Found in Tubular Structures Regulates the Passage
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Which Circular Muscle Found in Tubular Structures Regulates the Passage

Question 142

Question 142

Multiple Choice

Which circular muscle found in tubular structures regulates the passage of substances?


A) Lumen
B) Sphincter
C) Leaflet
D) Vegetation
E) Valve

Correct Answer:

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