Chapter 23.2, Problem 2AYP

Summary Introduction

To determine:

The four steps of respiration.

Introduction:

Respiration is commonly known as breathing. It is very important to maintain homeostasis. The respiratory tract is divided into two regions: the upper respiratory tract, including the structures from the nose to the larynx, and the lower respiratory tract, including the structures from the trachea to the alveoli in the lungs.