OVERVIEW OF THE IMMUNE SYSTEM
PRIMARY AND SECONDARY LYMPHOID ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a lymphocytes
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b macrophages
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C monocytes
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d both a and b
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Detailed explanation-1: -Within the cortex of the lymph node are lymphoid follicles, which consist of germinal centers of rapidly dividing B cells surrounded by a layer of T cells and other accessory cells.
Detailed explanation-2: -Lymph nodes contain lymphocytes, a type of white blood cell, and are primarily made up of B cells and T cells. B cells are mainly found in the outer cortex where they are clustered together as follicular B cells in lymphoid follicles, and T cells and dendritic cells are mainly found in the paracortex.
Detailed explanation-3: -Lymph Nodes 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).