Tonsils
Tonsils - Related Videos
08:09
Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils
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Cited by 11 •
2015
Palatine tonsils are a rich source of B and T lymphocytes. Here we provide an easy, efficient and rapid protocol to isolate B and T lymphocytes from human palatine tonsils. The method described has been specifically adapted for studies of the viral etiology of tonsil inflammation known as tonsillitis.
01:30
Tonsillitis I: Introduction
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2024
Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat. Etiology Three primary contributing factors have been identified. • Viruses: Viral infections are the most common cause of tonsillitis. Common viruses responsible for tonsillitis include rhinovirus, influenza, parainfluenza, Epstein-Barr virus, and adenovirus. • Bacteria: The predominant bacterium responsible for...
01:26
Tonsillitis II: Management
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2024
This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity. • Acute viral tonsillitis treatment usually involves outpatient supportive management, including analgesia (acetaminophen) and oral hydration, corticosteroids (dexamethasone), salt-water gargles, and rest. • Bacterial tonsillitis is typically treated with penicillin as the primary choice, although cephalosporins can also be effective. Antibiotic therapy with...
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...
10:11
Immunohistochemical Staining of B7-H1 (PD-L1) on Paraffin-embedded Slides of Pancreatic Adenocarcinoma Tissue
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Cited by 43 •
2013
B7-H1 (PD-L1) and its binding to PD-1 provide a major tumor-induced immunosuppressive signal in the tumor’s microenvironment. An immunohistochemical staining technique to characterize the expression and localization of B7-H1 in pancreatic adenocarcinoma is described here.
FAQs
Material from inhaled air or swallowed substances contacts the tonsil surface, where foreign molecules can be captured and processed by immune cells. This processing helps activate lymphocytes, which may then produce targeted antibodies and coordinate other defensive responses. The sequence links environmental exposure at a body entrance with a more specific immune reaction.
Their position around the entrances to the respiratory and digestive tracts places them where inhaled and swallowed material first passes. That location allows immune surveillance to occur close to surfaces exposed to the environment. In biology, this makes tonsils an example of how mucosal tissues monitor body boundaries rather than protecting only internal compartments.
Immune cells first process foreign molecules captured at the tonsil surface, then activate lymphocytes. Activated lymphocytes can produce antibodies directed toward particular targets, while other immune responses may also develop. This division of labor provides both recognition and a targeted reaction, helping explain how tonsils contribute to defense against potential pathogens.
Tonsils connect broad environmental exposure with selective immune recognition. Their surfaces encounter diverse material from air and food, but immune processing can lead to lymphocyte activation and targeted antibody production against particular foreign molecules. This illustrates how mucosal immune tissues can sample potentially harmful surroundings while generating responses with greater specificity.
Because tonsils detect material entering through the respiratory and digestive routes, their biology provides context for understanding tonsillitis, a condition associated with these tissues. Studying their location, surface interactions, and immune-cell activity helps relate local tonsil function to disease processes. The same framework connects normal immune surveillance with inflammation or infection affecting the tonsils.
A biology study can examine how tonsil structure and immune activity relate to the development of protective responses. Key observations include their position at exposed body surfaces, contact with inhaled or swallowed material, and activation of lymphocytes capable of producing targeted antibodies. These features help place tonsils within broader questions about how mucosal immunity develops.
Tonsil removal provides a context for examining the physiological significance of these lymphoid tissues. Comparing their normal immune-monitoring role with the effects associated with removal can help researchers consider how changes in mucosal immune anatomy relate to body function. The topic therefore connects tissue structure, immune defense, and physiological outcomes without reducing tonsils to a single function.