EBK HUMAN ANATOMY
EBK HUMAN ANATOMY
9th Edition
ISBN: 9780135241752
Author: Marieb
Publisher: PEARSON CO
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Chapter 22, Problem 8RQ
Summary Introduction

To determine:

The embryonic origin of the trachealis and smooth muscle around the bronchi.

Introduction:

There are three embryonic layers, namely ectoderm, mesoderm, and endoderm which appear in the initial stages of embryo development. The structures of the upper respiratory tract include the pharynx, bronchi, and the trachea. They give rise to various structures of the human body and are also called germ layers.

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