Lecture Notes: The Respiratory Tract

Introduction

• Presenter: Dr. Mike
• Topic: Parts of the respiratory tract and the pathway of air from the atmosphere to the lungs.

Conducting Pathways of Air

• Purpose: To understand the anatomical structures air moves through during respiration.

Pathway of Inspired Air

1. Nasal Cavity
   • First entry point for inspired air.
2. Back of the Throat (Pharynx)
   • Comprised of three parts:
     • Nasopharynx: Located posterior to the nasal cavity.
     • Oropharynx: Located behind the oral cavity.
     • Laryngopharynx: Area near the larynx.

Alternative Pathway

• Oral Cavity
  • Air can also be inspired through the mouth.

Upper Respiratory Tract

• Components:
  • Nasal cavity
  • Pharynx (nasopharynx, oropharynx, laryngopharynx)
  • Larynx
• Clinical Note:
  • Upper respiratory tract infections affect these areas.

Lower Respiratory Tract

1. Trachea
   • Air passes through after the larynx.
2. Bifurcation
   • Trachea splits into two main bronchi (left and right), resembling tree stems.

• Components:
  • Main stem bronchi (right and left)
• Clinical Note:
  • Lower respiratory tract infections involve these areas.

Additional Resources

• Simple Nursing:
  • Offers resources to assist nursing students.
  • Website: simplenursing.com
  • YouTube channel available for more information and study aids.

Conclusion

• Understanding the anatomy of the respiratory tract is crucial for diagnosing infections and other related conditions.