APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -In the lymphatic system a lymph node is a secondary lymphoid organ. A lymph node is enclosed in a fibrous capsule and is made up of an outer cortex and an inner medulla. Lymph nodes become inflamed or enlarged in various diseases, which may range from trivial throat infections to life-threatening cancers.

Detailed explanation-2: -The outer cortex has lymphatic nodules that mostly contain B-cells.

Detailed explanation-3: -The medulla is the innermost layer of the lymph node and contains large blood vessels, sinuses, and medullary cords. The medullary cords contain antibody-secreting plasma cells, B-cells, and macrophages.

Detailed explanation-4: -The cortex is mainly composed of clusters of B cells in the outer layers and T cells in the inner layers, and may also contain antigen-presenting dendritic cells. The medulla contains plasma cells, macrophages, and B cells as well as sinuses, which are vessel-like spaces that the lymph flows into.