Upper Respiratory Tract - *Quick Explainer Video*

What is the Upper Respiratory Tract? This video covers the medical definition and provides a brief overview of this topic.
💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

Starting from the most external part of the tract, the nasal cavity is the body's primary entryway for air. It comprises an inner space in the nose, divided by the septum. Its walls are lined with cilia and mucus, which serve as the first line of defense against foreign particles, such as dust and microorganisms.

Moreover, the nasal cavity has a role in warming and humidifying inhaled air, preparing it for the lower respiratory tract. The pharynx, or throat, is a funnel-shaped tube that extends from the base of the skull to the level of the sixth cervical vertebra. It functions as a passageway for air from the nasal cavity to the larynx and for food from the mouth to the esophagus. The pharynx is divided into three parts: the nasopharynx (the uppermost portion), the oropharynx (middle section), and the laryngopharynx (the lower part). Notably, the pharynx hosts clusters of lymphatic tissues, known as tonsils, that protect the body against airborne pathogens.

Further down, the larynx, also known as the voice box, connects the pharynx and the trachea. It contains the vocal cords, which vibrate and produce sound when air passes through them. The larynx also has a critical safety function. A small leaf-shaped flap of cartilage called the epiglottis covers the larynx during swallowing, preventing food or liquid from entering the lungs.

It is noteworthy that the upper respiratory tract also plays a critical role in human speech production. The manipulation of airflow through the tract, along with the movement of the tongue and lips, allows us to produce an array of sounds and words. The upper respiratory tract can be affected by various conditions and diseases, ranging from the common cold and influenza to more severe conditions such as epiglottitis and laryngeal cancer.

These conditions can affect the quality of life, as they can lead to symptoms such as coughing, sneezing, difficulty breathing, and loss of voice. The upper respiratory tract is not just a simple conduit for air to reach our lungs. It is a complex, multifunctional system that provides critical protective and physiological functions. It filters, warms, and humidifies air, helps to produce sounds for speech, and guards us against a variety of pathogens. Understanding the upper respiratory tract is an essential step in learning the intricacies of the human respiratory system.

💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

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🚑MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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This description contains affiliate links. If you decide to purchase a product through one of them, we receive a small commission at no cost to you.

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⏰TIMESTAMPS
0:00 - Intro
0:25 - Nasal Cavity
0:58 - Pharynx
1:38 - Larynx
2:20 - Upper Respiratory Tract

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