The structural difference between internal and external anal sphincters. Introduction: The last part of the rectum is known as the anal canal. The anal canal provides a passage for the waste to get excreted from the body. The external and internal anal sphincters play an important role in regulating the opening of the anal canal.

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Chapter 24.13, Problem 54AYP

Summary Introduction

To explain:

The structural difference between internal and external anal sphincters.

Introduction:

The last part of the rectum is known as the anal canal. The anal canal provides a passage for the waste to get excreted from the body. The external and internal anal sphincters play an important role in regulating the opening of the anal canal.

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