Tonsils

Definition

Tonsils are lymphoid tissues located at the back of the throat that play a role in immune response by trapping and destroying pathogens entering through the mouth or nose. They are part of the body's first line of defense and contribute to both innate and adaptive immunity.

5 Must Know Facts For Your Next Test

1. Tonsils contain T lymphocytes that are crucial for cellular immunity.
2. They serve as a site for antigen presentation, initiating an adaptive immune response.
3. Tonsils produce antibodies to help neutralize pathogens.
4. Inflammation or infection of the tonsils is known as tonsillitis, which can affect immune function.
5. The tonsillar tissue includes crypts that trap pathogens, aiding in their destruction.

Review Questions

• What type of lymphocytes are found in the tonsils and what is their role?
• How do tonsils contribute to both innate and adaptive immunity?
• What is the significance of antigen presentation in tonsillar tissue?

Related terms

Lymphoid Tissue: Specialized tissues involved in the production and maturation of lymphocytes.

Antigen Presentation: The process by which immune cells capture antigens and present them on their surface to T cells.

T Lymphocytes (T Cells): A type of white blood cell essential for cellular immunity, responsible for attacking infected or cancerous cells.