Chapter 22, Problem 1CRCAQ

Summary Introduction

To review:

1. The anatomical reason that allows the fluids to come out from the nose.

2. The structure preventing the downward flow of milk into the nose during drinking in an upside down position.

Introduction:

The passage of food into the alimentary canal and the conduction of air to the lungs are done by two separate structures. These are composed of various different components. The respiratory and the digestive passage have a common point of interception in the region of mouth but the interface is separated by a valve.