Multiple Choice
Which of the following innate defense mechanisms can lyse bacteria and mark cells for phagocytosis?
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41. Immune System
Immune System
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What is the primary role of helper T cells in the immune system?
A
They directly destroy infected or cancerous cells.
B
They engulf and digest foreign particles and debris.
C
They activate other immune cells by releasing cytokines.
D
They produce antibodies to neutralize pathogens.
Verified step by step guidance1
Understand the role of helper T cells in the immune system: Helper T cells are a type of lymphocyte that play a central role in coordinating the immune response.
Learn about cytokines: Helper T cells release signaling molecules called cytokines, which help activate and direct other immune cells such as B cells, cytotoxic T cells, and macrophages.
Differentiate helper T cells from other immune cells: Unlike cytotoxic T cells, which directly destroy infected or cancerous cells, or B cells, which produce antibodies, helper T cells primarily function as 'managers' of the immune response.
Recognize the importance of activation: Helper T cells are activated when they recognize antigens presented by antigen-presenting cells (APCs) such as dendritic cells or macrophages. This activation triggers the release of cytokines.
Conclude the primary role: The main function of helper T cells is to activate other immune cells by releasing cytokines, ensuring a coordinated and effective immune response against pathogens.
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