Chapter 35.1, Problem 1CYP

Summary Introduction

To enlist:

Some features that are common to animals such as earthworms, hydras, and salamanders, which are able to exchange gases directly with their environment.

Introduction:

Exchange of gases is a part of respiration. Organisms have respiratory system for that. Respiratory system is an organ system that aids in the gaseous exchange in animals and plants. Respiration includes two processes; breathing (external respiration) and cellular respiration (internal respiration). The organs included in the respiratory system are lungs, trachea, nasal cavity, nose, pharynx, larynx, bronchi, bronchioles, and alveoli.