34.8 Circulation and Respiratory Systems

34.8.2 Describe the basic anatomy (structure) of the respiratory system.

The respiratory system consists of various essential structures that work together to facilitate the exchange of oxygen and carbon dioxide in our bodies. 

The respiratory system begins its journey as air enters the body through the nose and mouth.

From there, the air travels down the throat into the trachea (windpipe).

The trachea then divides into two bronchi, leading to each lung.

Within the lungs, the bronchi further divide into smaller tubes called bronchioles.

Finally, at the end of the bronchioles are the tiny air sacs known as alveoli, where the crucial exchange of oxygen and carbon dioxide occurs.

34.8.4 Describe the physiology (function) of the respiratory system.

The respiratory system performs crucial functions that are essential for sustaining life:

Pulmonary Ventilation:

Breathing is a vital process involving the inhalation and exhalation of air.

This action ensures a continuous supply of oxygen into the body and the removal of carbon dioxide, maintaining a balance necessary for bodily functions.