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Tonsils & Adenoids (Lymphoid Tissue) of the Pharynx

The openings to the pharynx from the nose and mouth are protected by a ring of tonsils and other types of lymphoid tissue (Waldeyer’s ring).

Along the anterolateral walls of the oropharynx are the image descriptionpalatine tonsils, which are often referred to as “the tonsils”.

 

Oral view and sagittal view demonstrating the tonsils
Oral view and sagittal view demonstrating the tonsils with label : Palatine tonsil
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  • Pathogens such as viruses and bacteria drain into these masses, where they are destroyed by lymphocytes and other types of leukocytes (white blood cells).
  • When these structures become inflamed and sore, the condition is referred to as tonsilitis.
  • Embedded in the posterior wall of the nasopharynx, near the midline, is the image descriptionpharyngeal tonsil  (adenoids). Inflammation of the pharyngeal tonsil can impede airflow through the nasopharynx, causing breathing difficulties and an alteration of the voice (increased nasal tones).
Sagittal view
Sagittal view of the head and neck demonstrating the tonsils with label: Pharyngeal tonsil
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Sagittal view
Sagittal view of the head and neck demonstrating the tonsils with label:: lingual tonsil
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An Overview of the Tonsils & Adenoids (Lymphoid Tissue) of the Pharynx

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Sagittal and oral view hidden answers
Sagittal and oral view with labels: pharyngeal tonsil, palatine tonsil and lingual tonsil
Test yourself while observing the Tonsils anatomy
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