7E - The Lymphatic System Flashcards
circulatory system
A collection of tissues and organs involved in the transportation of substances around the body. Composed of the lymphatic and cardiovascular systems.
lymphatic system
A large network of vessels and tissues throughout the body that form an important component of both the circulatory and immune systems.
secondary lymphoid system
Components of the lymphatic system that are responsible for the maintenance of mature lymphocytes and the activation of the adaptive immune response. Includes lymph nodes and the spleen.
primary lymphoid tissue
Components of the lymphatic system that are responsible for the production and maturation of lymphocytes. Includes bone marrow and the thymus.
lymph
A pale fluid that flows through the lymphatic system and has high concentration of leukocytes.
bone marrow
Semi-solid tissue found within bones. Serves as the primary site of the creation of red blood cells and leukocytes.
thymus
A primary lymphoid organ located in the chest. Serves as the site of T cell maturation.
lymph node
A small secondary lymphoid tissue found throughout the body where antigen-presentation cells activate the adaptive immune system.
tonsils
The name given to the two lymph nodes that reside at the back of the throat.
spleen
An organ located in the upper abdomen that serves a variety of functions in the immune system and the regulation of blood cells.
lymphatic capillaries
The smallest form of lymphatic vessel. Located in the spaces between cells.
afferent lymphatic vessel
Thin-walled structures that collect lymph from the tissues of the body and deliver it to lymph nodes.
efferent lymphatic vessels
Thin-walled structures that collect lymph that has drained though lymph nodes, returning it back to circulation.
