Dr. Jennifer B Richter

The respiratory system allows the body to breathe, talk, and smell. The respiratory system is primarily responsible for bringing oxygen into the body and is a major pathway to remove carbon dioxide and other waste gases. Adequate functioning of the respiratory system depends on having the nervous, cardiovascular, and musculoskeletal systems working properly as well. This will be discussed later in the chapter.

This chapter is separated into three sections: the upper respiratory system, the lower respiratory system (see Figure 23.2), and the system of oxygenation and gas exchange. This chapter will review both the upper and lower respiratory systems and will briefly discuss common conditions that affect the respiratory tract, oxygenation, and gas exchange (Cleveland Clinic, 2023).

Excerpt - The lower respiratory system (shown in Figure 25.2) plays a crucial role in respiration, allowing the exchange of oxygen and carbon dioxide between the body and the external environment. The lower respiratory system includes the trachea, the lungs, and within the lungs, the bronchi, bronchioles, and alveoli. See Introduction to the Respiratory System for more information on the lower and upper respiratory systems. Various respiratory diseases and disorders can significantly affect the functioning of the lower respiratory system, leading to respiratory distress, impaired lung function, and reduced quality of life. Lower respiratory drugs are a class of medications designed to alleviate symptoms, manage chronic conditions, and improve overall respiratory function.