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02-12-2020
Biology

contestada

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

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briannat7726 briannat7726

02-12-2020

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

Explanation:

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