Pharynx
Pharynx - Related Videos
08:46
Nose, Sinuses, Oral Cavity and Pharynx Exam
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2023
Source: Richard Glickman-Simon, MD, Assistant Professor, Department of Public Health and Community Medicine, Tufts University School of Medicine, MA This video provides an overview of sinus, nose, and throat examinations. The demonstration begins with a brief overview of the anatomy of the region. The upper third of the nose is bony, and the bottom two-thirds are cartilaginous. Air entering the nares passes through the nasal vestibules and into the narrow passageway between the nasal septum...
01:20
Pharynx
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2025
The pharynx, a tubular structure framed by skeletal muscle and lined with mucous membrane, extends continuously from the nasal cavities. It is segmented into three major areas: the nasopharynx, oropharynx, and laryngopharynx. Nasopharynx The nasopharynx, bordered by the conchae of the nasal cavity, serves exclusively as an air conduit. In its superior region, the pharyngeal tonsils or adenoids are located. These tonsils are clusters of lymphoid reticular tissue akin to a lymph node. The precise...
06:14
Chemical Amputation and Regeneration of the Pharynx in the Planarian Schmidtea mediterranea
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Cited by 3 •
2018
The planarian Schmidtea mediterranea is an excellent model for studying stem cells and tissue regeneration. This publication describes a method to selectively remove one organ, the pharynx, by exposing animals to the chemical sodium azide. This protocol also outlines methods for monitoring pharynx regeneration.
09:14
C. elegans Development and Reproduction
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2023
Ceanorhabditis elegans is a powerful tool to help understand how organisms develop from a single cell into a vast interconnected array of functioning tissues. Early work in C. elegans traced the complete cell lineage and structure at the electron microscopy level, allowing researchers unprecedented insight into the connection between genes, development and disease. Appreciating the stereotyped development and reproductive program of C. elegans is essential to using this model organism to its...
02:59
C. elegans Gonad Extrusion: A Rapid Dissection Technique
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2023
This video describes a method to dissect gonads from adult C. elegans hermaphrodites, resulting in tissues that are suitable for immunostaining and fluorescent imaging.
FAQs
During swallowing, coordinated contractions of the pharyngeal muscles propel food and liquid toward the esophagus. This muscular sequence helps direct material through the shared throat passage rather than leaving it in the oral or nasal regions. Studying this coordination is important because disrupted movement can contribute to swallowing disorders and interfere with the normal transfer of material into the digestive tract.
The pharynx supports two different transport pathways: it conducts air toward the larynx during breathing and moves food or liquid toward the esophagus during swallowing. Protective movements during swallowing help keep material from entering the airway. This coordination is biologically important because the same passage must accommodate respiratory and digestive functions without allowing them to interfere.
Lymphoid tissues in the pharynx contribute to immune defense in the throat region. Their location allows the pharynx to participate not only in air and food transport but also in protection against threats encountered along these routes. This immune role adds biological significance to pharyngeal anatomy and helps explain why the region is relevant when studying infections of the upper respiratory tract.
A complete biological study should examine more than the passage of air and swallowed material. Pharyngeal muscles support swallowing, protective movements help guard the airway, and the region contributes to speech resonance. Its lymphoid tissues also participate in immune defense. Considering these functions together helps explain why changes in one area may have consequences for several upper respiratory and digestive processes.
Pharyngeal anatomy provides a framework for understanding how swallowing normally moves food and liquid toward the esophagus while protecting the airway. If muscular coordination or protective movement is disrupted, swallowing may not proceed normally. Examining this region therefore helps connect anatomical structure with the mechanisms underlying swallowing disorders and supports the biological interpretation of problems involving the upper digestive tract.
The pharynx is clinically relevant because it lies at the intersection of respiratory and digestive pathways. Its roles in air conduction, swallowing, airway protection, and immune defense must be considered when examining conditions or procedures involving the upper respiratory and digestive tracts. This context also helps explain the importance of recognizing airway obstruction, infections, and impaired swallowing in clinical evaluation.