What is Lymphoreticular tissue?
The lymphoreticular system consists of the tissues of the lymphoid system and the mononuclear phagocyte system (reticuloendothelial system). The lymphoid system includes the thymus, bone marrow, lymph nodes, spleen, and the lymphoid tissues associated with the gastrointestinal tract (e.g., tonsils, Peyer patches).
What are the four types of lymphoid tissue?
The histological structure of four different types of secondary lymphoid tissue; lymph nodes, tonsils, Mucosa associated lymphoid tissue and the spleen, and how their structure is adapted to their different functions. The involvement of the lymphoid tissues in some common medical conditions.
What are the tissues of the lymphatic system?
lymphoid tissue, cells and organs that make up the lymphatic system, such as white blood cells (leukocytes), bone marrow, and the thymus, spleen, and lymph nodes.
What are the two groups of lymphatic tissues?
There are two primary lymphatic organs: the red bone marrow and the thymus gland. The development of white blood cells (haemopoesis) was covered briefly in the section on blood. Both T-cell and B-cells are ‘born’ in the bone marrow.
What is the lymphoreticular system made up of?
lymph vessels
The lymphatic system is part of the immune system and is made up of a network of tubes known as lymph vessels. These vessels transport a fluid called lymph around the body and into the bloodstream.
What are the secondary lymphoid tissues?
Secondary lymphoid organs (SLOs) include lymph nodes, spleen, Peyer’s patches, and mucosal tissues such as the nasal-associated lymphoid tissue, adenoids, and tonsils.
What is lymph and its function?
Lymph (from Latin, lympha meaning “water”) is the fluid that flows through the lymphatic system, a system composed of lymph vessels (channels) and intervening lymph nodes whose function, like the venous system, is to return fluid from the tissues to the central circulation.
What are types of lymphocytes?
Lymphocyte 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. The T cells destroy the body’s own cells that have themselves been taken over by viruses or become cancerous.
Why is it called lymphatic tissue?
It is made up of a large network of lymph, lymphatic vessels, lymph nodes, lymphatic or lymphoid organs, and lymphoid tissues. The vessels carry a clear fluid called lymph (the Latin word lympha refers to the deity of fresh water, “Lympha”) towards the heart.
Which is the best description of a lymphoreticular disorder?
lymphoreticular disorders a group of disorders of the lymphoreticular system, characterized by the proliferation of lymphocytes or lymphoid tissues; they may be either benign (such as lymphocytosis) or malignant (such as lymphoblastic leukemias, multiple myeloma, or non-Hodgkin’s lymphomas). See also lymphoproliferative disorders.
How is the reticuloendothelial system related to the lymphoreticular system?
Related to lymphoreticular system: reticuloendothelial system [sis´tem] 1.a set or series of interconnected or interdependent parts or entities (objects, organs, or organisms) that act together in a common purpose or produce results impossible by action of one alone.
When did Virchow describe the lymphoreticular infiltrate in a tumor?
In 1863 Virchow described the presence of inflammatory leukocytes in tumor tissues and proposed a concept that the ” lymphoreticular infiltrate” in the tumor reflects the origin of chronic inflammation at the tumor site [1]. The rest of the systemic examinations, including the lymphoreticular and cardiovascular examinations, were unremarkable.