Lymphatic system components – spleen, thymus, nodes reasons for enlarged lymph nodes in chest

The primary functions of the lymphatic system are to drain and return interstitial fluid to the blood, to absorb and return lipids from the digestive system to the blood, and to filter fluid of pathogens, damaged cells, cellular debris, and cancerous cells. Mildly enlarged mediastinal lymph nodes Lymphatic System Structures

• Lymphatic Vessels Lymphatic vessels are structures that absorb fluid that diffuses from blood vessel capillaries into surrounding tissues. What causes enlarged lymph nodes in groin area This fluid is directed toward lymph nodes to be filtered and ultimately re-enters blood circulation through veins located near the heart. Swollen painful lymph nodes in neck but not sick The smallest lymphatic vessels are called lymph capillaries.


Swollen cervical lymph nodes in neck causes Lymphatic capillaries come together to form larger lymphatic vessels. Causes of swollen lymph nodes in neck and face Lymphatic vessels from various regions of the body merge to form larger vessels called lymphatic trunks. Enlarged neck lymph nodes in dogs Lymphatic trunks merge to form two larger lymphatic ducts. Pictures of swollen lymph nodes in groin female Lymphatic ducts return lymph to blood circulation by draining lymph into the subclavian veins in the neck.

• Lymph Nodes Lymphatic vessels transport lymph to lymph nodes. Causes of swollen lymph nodes in neck and armpit These structures filter lymph of pathogens, such as bacteria and viruses. Swollen groin lymph nodes std Lymph nodes also filter cellular waste, dead cells, and cancerous cells. Enlarged lymph nodes in the neck armpits or groin Lymph nodes house immune cells called lymphocytes. What causes enlarged lymph nodes in abdomen These cells are necessary for the development of humoral immunity (defense prior to cell infection) and cell mediated immunity (defense after cell infection). Pictures of enlarged lymph nodes in the neck Lymph enters a node through afferent lymphatic vessels, filters as it passes through channels in the node called sinuses, and leaves the node through an efferent lymphatic vessel.

• Thymus The thymus gland is the main organ of the lymphatic system. Enlarged lymph nodes in the neck causes Its primary function is to promote the development of specific cells of the immune system called T-lymphocytes. Causes of inflamed lymph nodes in neck Once mature, these cells leave the thymus and are transported via blood vessels to the lymph nodes and spleen. What can cause enlarged lymph nodes in the neck T-lymphocytes are responsible for cell mediated immunity, which is an immune response that involves the activation of certain immune cells to fight infection. What causes enlarged lymph nodes in the groin In addition to immune function, the thymus also produces hormones that promote growth and maturation.

• Spleen The spleen is the largest organ of the lymphatic system. Pictures of swollen lymph nodes in neck hiv Its primary function is to filter blood of damaged cells, cellular debris, and pathogens. Multiple enlarged lymph nodes in abdomen Like the thymus, the spleen houses and aids in the maturation of lymphocytes. What can cause swollen lymph nodes in the neck Lymphocytes destroy pathogens and dead cells in the blood. Pictures of swollen lymph nodes under jaw The spleen is rich in blood supplied via the splenic artery. Can chlamydia cause swollen lymph nodes in the neck The spleen also contains efferent lymphatic vessels, which transport lymph away from the spleen and toward lymph nodes.

• Tonsils Tonsils are arrays of lymphatic tissue located in the upper throat region. Enlarged groin lymph nodes ovarian cancer Tonsils house lymphocytes and other white blood cells called macrophages. Can swollen lymph nodes cause jaw pain These immune cells protect the digestive tract and lungs from disease causing agents that enter the mouth or nose.

• Bone Marrow Bone marrow is the soft, flexible tissue found inside bone. Groin swollen lymph nodes Bone marrow is responsible for the production of blood cells: red blood cells, white blood cells, and platelets. Swollen occipital lymph node pictures Bone marrow stem cells play an important role in immunity as they generate lymphocytes. Enlarged lymph nodes in neck symptoms While some white blood cells mature in bone marrow, certain types of lymphocytes migrate to lymphatic organs, such as the spleen and thymus, to mature into fully functioning lymphocytes.

Lymphatic tissue can also be found in other areas of the body, such as the skin, stomach, and small intestines. Sore throat and swollen lymph nodes no fever Lymphatic system structures extend throughout most regions of the body. Several swollen lymph nodes in neck One notable exception is the central nervous system. Sore throat and enlarged lymph nodes in neck Lymphatic System Summary

The lymphatic system plays a vital role in the proper functioning of the body. Enlarged lymph nodes in groin male One of the major roles of this organ system is to drain excess fluid surrounding tissues and organs and return it to the blood. Painful enlarged lymph nodes in neck Returning lymph to the blood helps to maintain normal blood volume and pressure. Swollen groin lymph nodes herpes It also prevents edema, the excess accumulation of fluid around tissues. What can cause enlarged lymph nodes in dogs The lymphatic system is also a component of the immune system. Enlarged lymph nodes in groin and neck As such, one of its essential functions involves the development and circulation of immune cells, specifically lymphocytes. What are swollen lymph nodes a sign of These cells destroy pathogens and protect the body from disease. Reasons for enlarged lymph nodes In addition, the lymphatic system works in conjunction with the cardiovascular system to filter blood of pathogens, via the spleen, before returning it to circulation. Swollen inguinal lymph nodes male causes The lymphatic system works closely with the digestive system as well to absorb and return lipid nutrients to the blood.

• SEER Training Modules, Introduction to the Lymphatic System. Multiple enlarged lymph nodes U. Enlarged lymph nodes in neck S. Enlarged lymph nodes in neck and armpit National Institutes of Health, National Cancer Institute. Enlarged lymph nodes in armpit for 5 years Accessed 8 August 2013 (http://training.seer.cancer.gov/)

• What Is Non-Hodgkin Lymphoma? National Cancer Institute. Swollen lymph node in neck one side for years Updated 02/12/08 (http://www.cancer.gov/cancertopics/wyntk/non-hodgkin-lymphoma/page2)