MICROANATOMY

Detailed explanation-1: -Primary lymphoid organs: These organs include the bone marrow and the thymus. They create special immune system cells called lymphocytes.

Detailed explanation-2: -Primary lymphatic organs are where lymphocytes are formed and mature. They provide an environment for stem cells to divide and mature into B-and T-cells: There are two primary lymphatic organs: the red bone marrow and the thymus gland.

Detailed explanation-3: -Types and functions of lymphocytes Both originate from stem cells in the bone marrow and are initially similar in appearance. Some lymphocytes migrate to the thymus, where they mature into T cells; others remain in the bone marrow, where-in humans-they develop into B cells.

Detailed explanation-4: -A lymphocyte is a type of white blood cell that is part of the immune system. There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins.

Detailed explanation-5: -Some examples of Secondary Lymphoid Organs are spleen, lymph nodes, peyer’s patches (in the intestine), etc. They store and activate mature Lymphocytes and thus initiates adaptive Immune response. They are thus known as “Lymphocyte activation sites” in the body.