malignant tumor
While surrounding tissues it is called interstitial fluid. Once it enters the lymphatic system it is called lymphatic fluid.
Lymphatic vessels contain lymph, a fluid that circulates throughout the body to maintain fluid balance, transport waste, and support immune function. The lymphatic vessels are also surrounded by lymphoid tissues, such as lymph nodes, which house immune cells that help in fighting infections and regulating immune responses.
Blood and lymphatic vessels
0the component of the lymphatic system is the lymph nodes
The endothelium is a type of tissue that lines the inside of blood vessels, including arteries, veins, and capillaries throughout the body. It acts as a barrier between blood and surrounding tissues, and plays a critical role in regulating blood flow, clotting, and inflammation.
Fluid moves through the lymph nodes via the lymphatic system, which collects interstitial fluid from tissues and transports it through lymphatic vessels. As lymph fluid enters the lymph nodes through afferent lymphatic vessels, it flows through a network of sinuses, allowing immune cells to monitor and respond to pathogens. After filtration and immune response, the fluid exits the lymph node through efferent lymphatic vessels, eventually returning to the bloodstream. This process is facilitated by the contraction of surrounding muscles and the one-way valves in lymphatic vessels.
The lymphatic vessels located just below the skin are called superficial lymphatic vessels. They are responsible for collecting lymph fluid, which contains waste products and immune cells, from the tissues near the skin and transporting it back towards the lymph nodes for filtration and processing.
Lymph is transported in the body primarily through the lymphatic system, which consists of a network of lymphatic vessels that run parallel to the blood vessels. Lymph is collected from tissues and is carried through these vessels toward the lymph nodes, where it is filtered. The movement of lymph is facilitated by the contraction of surrounding muscles and the presence of one-way valves that prevent backflow. Ultimately, lymph is returned to the bloodstream via the thoracic duct and the right lymphatic duct.
lymphatic
The walls of lymphatic vessels are thin to allow for easy movement of fluid, immune cells, and other substances from the surrounding tissues into the vessels. This thinness facilitates the uptake and transport of lymphatic fluid throughout the body and promotes efficient immune surveillance and response.
A vessel that, unlike a blood vessel, carries fluid only away from tissues. This fluid is a pale, watery substance known as lymph.The smallest lymph vessels are the lymph capillaries, which begin in the tissue spaces as blind-ended sacs. Lymph capillaries are found in all regions of the body except the bone marrow, central nervous system, and tissues, such as the epidermis, that lack blood vessels. They are especially numerous in the loose connective tissues under the epithelium of the skin and mucous membranes.
Veins and lymphatic vessels have thin walls and wide lumens. The thin walls of veins allow for flexibility and capacitance, accommodating varying volumes of blood. Lymphatic vessels, which transport lymph fluid, also feature thin walls to facilitate the absorption and movement of interstitial fluid. Both types of vessels rely on surrounding tissues for support and are equipped with valves to prevent backflow.