APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Lymph nodes are small bean-shaped tissues found along the lymphatic vessels. The lymph nodes act as filters. Various immune system cells trap germs in the lymph nodes and activate the creation of special antibodies in the blood.

Detailed explanation-2: -Medullary B lymphocytes are antibody-producing effector cells, i.e. plasmablasts and mature plasma cells. Antigens which have penetrated the surface defense barriers usually reach the lymph nodes via the afferent lymphatic vessels (Figure 4).

Detailed explanation-3: -It’s found mainly in blood and tissue fluids. IgG antibodies help protect your body from viral and bacterial infections. Found in your blood and lymph system, IgM antibodies act as the first line of defense against infections. They also play a large role in immune regulation.

Detailed explanation-4: -Lymph node structure The outer layer (Cortex) contains the B-cell areas, or follicles. The middle layer (Paracortex) is mostly populated by T cells and dendritic cells (Figure 1). The paracortex also contains specialised blood vessels (high endothelial venules) through which many B and T cells enter the node.