What are the lymphatic organs and their functions?
The primary lymphoid organs are the red bone marrow, in which blood and immune cells are produced, and the thymus, where T-lymphocytes mature. The lymph nodes and spleen are the major secondary lymphoid organs; they filter out pathogens and maintain the population of mature lymphocytes.
How does lymph system drain?
Lymph fluid travels through the lymph vessels and drains into the bloodstream. This is a colourless fluid that is made in the body. It surrounds all body tissues. Extra fluid from tissue in the body drains into and flows through small lymph vessels.
What are the organs of the lymphatic system?
Organs of the lymphatic system include white blood cells, lymphatic vessels, and the lymph nodes. An extensive network of tiny vein-like structures, lymphatic vessels are organs of the lymphatic system responsible for carrying the interstitial fluid, also referred to as lymph.
What are the 3 accessory organs of the lymphatic system?
The lymphoid organs assist the lymphatic system. They include the thymus, spleen, tonsils, and appendix, along with some special tissue in the gut: The thymus: The thymus is located in the thoracic cavity, just under the neck. It’s made up of two lobes of lymphoid tissue. Each lobe has a medulla surrounded by a cortex.
Where are lymphocytes located in the immune system?
Associated organs composed of lymphoid tissue are the sites of lymphocyte production. Lymphocytes are concentrated in the lymph nodes. The spleen and the thymus are also lymphoid organs of the immune system. The tonsils are lymphoid organs that are also associated with the digestive system.
How does the lymphatic system collect and filter lymph?
Lymphatic vessels collect and filter lymph (at the nodes) as it continues to move toward larger vessels called collecting ducts. These vessels operate very much like your veins do: they work under very low pressure, have a series of valves in them to keep the fluid moving in one direction.
What is the function of the lymphatic system?
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
What are the structures of the lymphatic system?
The lymphatic system consists of open-ended vessels, lymph nodes, and organs such as the tonsils, spleen, and thymus. Unlike the blood vascular system, lymphatic circulation is not a closed loop.
What is spleen lymphatic system?
The spleen is part of the lymphatic system, which is an extensive drainage network. The lymphatic (lim-FAT-ik) system works to keep body fluid levels in balance and to defend the body against infections. It is made up of a network of lymphatic vessels that carry lymph — a clear,…
How is the lymphatic system made?
Components of the Lymphatic System. The lymphatic system consists of a fluid (lymph), vessels that transport the lymph, and organs that contain lymphoid tissue. Lymph is a fluid similar in composition to blood plasma. It is derived from blood plasma as fluids pass through capillary walls at the arterial end.