Lymphatic System: Definitions

Brings lymph into a lymph node.

Made by activated B lymphocytes. Attach to foreign particles and mark them for destruction.

Excess of tissue fluid which causes “swelling” of the tissues.

“Surface markers” on cells that allow the body to detect its own cells from foreign cells.

Takes lymph away from a lymph node.

Also called tissue fluid. Fluid between the tissues.

Space between the tissues.

A lymph capillary found in the small intestines. Absorbs lipids.

Patches of lymphatic tissue located at the base of the tongue.

Fluid collected from tissues and returned to blood stream.

Small organs found along the course of lymphatic vessels. Contains channels and sinuses.

The smallest of the lymph vessels. Found in most tissues.

Tonsils, thymus, spleen and lymph nodes.

Resemble veins but transport lymph instead of blood.

A type of wbc that is active in the immune system. T lymphocytes (T cells) and B lymphocytes (B cells) have various roles in immunity.

Patches of lymphatic tissue located at the back (posterior) of the oral cavity.

Bacteria, viruses, fungi and other microbes that can cause disease.

Patch of lymphatic tissue located at the lower portion of the nasal cavity. Also called adenoids.

One of two lymphatic ducts that empty their lymph into the subclavian vein.

Organ that filters blood but contains lymphatic tissues containing lymphocytes and macrophages.

Largest lymphatic duct; Empties its lymph into the subclavian vein.

Organs that are designed to detect pathogens that we inhale or ingest.

Cavity located between the two pleural cavities. Contains the heart, great vessels of the heart, esophagus, lymph nodes, …

The largest lymph vessels that receive lymph from all other lymph vessels and capillaries. Also called lymph collecting ducts. There are two lymphatic ducts - the right lymphatic duct and the thoracic duct.