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1) What is a sphincter muscle? 2)Name TWO places in the alimentary canal where sphincter muscles are found? ​
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1) What is a sphincter muscle?

2)Name TWO places in the alimentary canal where sphincter muscles are found?

​

User Jccampanero
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Answer:

1-A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.

2-Sphincters are specialized muscles that are located at the upper esophagus (upper esophageal sphincter (UES) and the gastroesophageal junction

Step-by-step explanation:

User Rjcarr
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