Definition of Lymph node

1. Noun. The source of lymph and lymphocytes.


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)

Lexicographical Neighbors of Lymph Node

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

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