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A Visual Analogy Guide to Human Anatomy 4th Edition

A Visual Analogy Guide to Human Anatomy (4th Edition)

Book Edition4th Edition
PublisherMorton Publishing

Chapter 14, Tracing the Pathway of an Oxygen Molecule, Figure Questions, Exercise 1

Page 267

Here is a tip:

A pair of openings are found right above the mouth.


The external nostrils are part of the upper respiratory tract. They are two circular openings at the tip of the nose through which air enters the body.

Verified Answer

External nostrils

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