BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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B Cells
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R Cells
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T Cells
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P cells
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Detailed explanation-1: -The lymph node is composed of sinuses that allow travel of lymph, the cortex and paracortex composed of T and B lymphocytes, and the medulla consisting of plasma cells and macrophages (Figure 7).
Detailed explanation-2: -There are two major types of T cells: the helper T cell and the cytotoxic T cell. As the names suggest helper T cells ‘help’ other cells of the immune system, whilst cytotoxic T cells kill virally infected cells and tumours.
Detailed explanation-3: -The majority of mature B cells outside of the GALT reside within lymphoid follicles of the spleen and lymph nodes, where they encounter and respond to T cell–dependent foreign antigens bound to follicular dendritic cells (DCs), proliferate, and either differentiate into plasma cells or enter GC reactions.