Definition of Lymph node

1. Noun. The source of lymph and lymphocytes.

Definition of Lymph node

1. Noun. (context: anatomy immunology) Small oval bodies of the lymphatic system, distributed along the lymphatic vessels, that are clustered in the armpits, groin, neck, chest and abdomen. They act as filters, with an internal honeycomb of connective tissue filled with lymphocytes and macrophages that collect and destroy bacteria, viruses and foreign matter from lymph. When the body is fighting an infection, these lymphocytes multiply rapidly and produce a characteristic swelling of the lymph nodes. ¹

¹ Source:

Medical Definition of Lymph node

1. Small bean-shaped organ made up of a loose meshwork of reticular tissue in which are enmeshed large numbers of lymphocytes, macrophages and accessory cells located along the lymphatic system. Recirculating lymphocytes leave the blood through the specialised high endothelial venules of the lymph node and pass through the node before being returned to the blood through the lymphatic system. Because the lymph nodes act as drainage points for tissue fluids, they are also regions in which foreign antigens present in the tissue fluid are most likely to begin to elicit an immune response. Nodes filter out bacteria or cancer cells that may travel through the lymphatic system. Synonym: lymph glands. (14 Oct 1997)

Lymph Node Pictures

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Lexicographical Neighbors of Lymph Node

lymph cell
lymph circulation
lymph cords
lymph corpuscle
lymph embolism
lymph follicle
lymph gland
lymph glands
lymph node (current term)
lymph node excision
lymph node of azygos arch
lymph node of ligamentum arteriosum
lymph node permeability factor
lymph nodes
lymph nodes of abdominal organs
lymph nodes of elbow
lymph nodule
lymph sacs
lymph sinus
lymph space
lymph varix
lymph vessel

Literary usage of Lymph node

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Journal of Experimental Medicine by Rockefeller University, Rockefeller Institute, Rockefeller Institute for Medical Research (1922)
"Rabbit C.—Bilateral testicular inoculation, with the popliteal lymph node of Rabbit B. At the time of operation, 3 months later, there was a nodular ..."

2. Proceedings of the Society for Experimental Biology and Medicine (1903)
"Mesenteric lymph node: Whole alcohol-fixed mesenteric lymph nodes were too thick ... Slices of formalin-fixed lymph node remained intact during the clearing ..."

3. Practice of Medicine by Frederick Tice (1921)
"MICROSCOPICAL SECTION OF RETROPERITONEAL LYMPH-NODE. Note masses of large cells separated by areas of normal pulp-cells. Several cells with multiple nuclei ..."

4. Practical Microscopy: A Course of Normal Histology for Students and by Maurice Norton Miller (1887)
"... as in the compound lymph node; the lymph simply filters through the reticulum, the same being a part of the lymph- channel system of the tissue in which ..."

5. The Journal of Comparative Pathology and Therapeutics (1888)
"At post-mortem examination the mesenteric lymph node of 23 was enlarged to 3 times its normal weight. There \vere no macroscopic changes in the intestines. ..."

6. Transactions of the American Pediatric Society by American Pediatric Society (1900)
"PERFORATION OF A TUBERCULOUS BRONCHIAL lymph node INTO THE TRACHEA. SUDDEN DEATH. ... DR. ROTCH.—It was supposed to be a tuberculous lymph node? ..."

7. Normal Histology: With Special Reference to the Structure of the Human Body by George Arthur Piersol (1916)
"Diagram illustrating architecture of lymph-node. in which elastic fibres and ... Section of small lymph-node through hilum. X 23. which thus subdivide the ..."

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