According to About.com, the major functions of lymph nodes are to assist the body's immune system and to filter lymph. About.com explains that these masses of tissue and other lymphatic organs are essential in preventing the buildup of fluid in tissues, protecting the body against infections and regulating blood pressure and volume.Know More
About.com states that lymph nodes are found in each part of the body except for the central nervous system. The lymph filtered by these specialized tissues refers to the clear fluid that surrounds the cells. According to About.com, the lymph nodes have an important function of filtering the lymph of pathogens, such as bacteria and viruses, dead cells, wastes and cancerous cells. The lymph that is filtered is then returned to the blood to prevent edema or the excess fluid buildup in the tissues.
About.com also explains that lymph nodes contain lymphocytes, which are immune system cells that are responsible for identifying and battling pathogens. According to About.com, the B-cell lymphocytes contained in the lymph nodes activate when an antigen is present, and antibodies are produced to fight that particular antigen. Additionally, the T-cell lymphocytes also aid in the destruction of these harmful pathogens and promote cell-mediated immunity.Learn More
Lymph nodes are tiny structures that help the body filter harmful and unhealthy substances, especially those that lead to infection. Cancer.org explains that each lymph node is packed with immune cells that help the body fight off infections by attacking germs carried to the nodes through lymph fluid.Full Answer >
Swollen lymph nodes mean that there is something amiss in the body, according to the Mayo Clinic. MedlinePlus explains that the lymph nodes may swell due to an infection, an immune or autoimmune condition, cancer or certain medications.Full Answer >
The evaluation of an isolated, swollen cervical lymph node consists of examining its characteristics, the patient’s risk factors and the presence of other clinical symptoms, according to K. M. Green Lerberg et al. in a 2007 article in The Journal of Family Practice. Node characteristics include drainage, size, mobility and whether the node is hard or soft.Full Answer >
According to NCBI Bookshelf, shotty lymph nodes in the lower lateral areas of the abdomen are a normal phenomenon in adults. The firm but not fixed nodes, which are less than 1 centimeter in diameter, occur following the recurrent infection or trauma to the feet and legs.Full Answer >