The Lymphatic Systemenparentshttps://kidshealth.org/EN/images/headers/KH_generic_header_05_2.jpgThe lymphatic system is an extensive drainage network that helps keep body fluid levels in balance and defends the body against infections.spleens, lymph fluid, lymph, lymphatic system, lymph nodes, lymphatics, lymph vessels, what causes swelling, swollen glands, blood, circulatory system, bloodstream, capillaries, lymphocytes, white blood cells, macrophages, antibodies, immunoblasts, thoracic ducts, lymphoid tissue, interstitial fluid, adenitis, lymphomas, lympadenopathy, enlarged spleens, splenomagaly, mono, mononucleosis, ebv, epstein-barr virus, tonsils, tonsillitis, tonsillectomy, swollen lymph nodes, pharyngitis, CD1Lymphedema, CD1Lymphoma07/06/200003/08/202103/08/2021Larissa Hirsch, MD02/09/2021e3a04be9-ff40-43f6-858a-909df5c6d4a0https://kidshealth.org/ws/RadyChildrens/en/parents/spleen-lymphatic.html/<h3>What Is the Lymphatic System?</h3> <p>The lymphatic system is part of the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/immune.html/">immune system</a>. It keeps body fluid levels in balance and defends the body against infections. Lymphatic (lim-FAT-ik) vessels, tissues, organs, and glands work together to drain a watery fluid called <strong>lymph</strong> from throughout the body.</p> <h3>What Does the Lymphatic System Do?</h3> <p>One of the lymphatic system's major jobs is to drain extra lymph (LIMF) fluid from body tissues and return it to the blood. Lymph contains white blood cells called <strong>lymphocytes</strong> (LIM-fuh-sites) and <strong>chyle</strong> (KYE-ul), which is made of fats and proteins from the intestines.</p> <p>This is important because water, proteins, and other substances are always leaking out of tiny blood capillaries into the body tissues around them. If the lymphatic system didn't drain it, this extra fluid would build up in the tissues and make them swell.</p> <h3>What's in the Lymphatic System?</h3> <p>Organs and tissues that are part of the lymphatic system include:</p> <ul> <li>bone marrow, the thick, spongy kind of jelly inside bones that makes many kinds of blood cells, including immune system cells</li> <li>thymus gland, which makes immune system cells called T cells, especially before and during <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/understanding-puberty.html/">puberty</a></li> <li><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/tonsillitis.html/">tonsils</a></li> <li><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/appendicitis.html/">appendix</a></li> <li>lymph nodes</li> </ul> <p><strong>Lymph nodes</strong> are small clumps of tissue along the network of lymph vessels that clean lymph as it moves through them. They filter out <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/germs.html/">viruses, bacteria, and fungi</a> that can cause illnesses.</p> <p>Most lymph nodes are in clusters in the neck, armpit, and groin area. They're also found along the lymphatic pathways in the chest, abdomen, and pelvis, where they filter blood. Inside the lymph nodes, T-cells and another type of lymphocyte, B-cells, help the body fight infection. B cells make antibodies &mdash; special proteins that stop infections from spreading by trapping disease-causing germs and destroying them.</p> <p><img class="center_this" title="Diagram has a side view of where lymph nodes are in the neck, among blood vessels and muscles." src="https://kidshealth.org/EN/images/illustrations/lymphnodesNeck-415x233-rd4-enIL.png" alt="lymph nodes in neck illustration" /></p> <p>When someone has an infection, germs collect in the lymph nodes. If their throat is infected, for example, the lymph nodes in the neck may swell. That's why doctors check for swollen lymph nodes (sometimes called swollen "glands") in the neck when someone has a <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/sore-throat-sheet.html/">sore throat</a>. When lymphatic nodes swell, it's called lymphadenopathy (lim-fad-n-OP-uh-thee).</p> <p><strong>Lymphatic vessels</strong>, or tubes, are the pathways that carry lymph. The major lymphatic vessels are:</p> <ul class="kh_longline_list"> <li><strong>The thoracic duct:</strong> It begins near the lower part of the spine and collects lymph from the pelvis, abdomen, and lower chest. The thoracic (thuh-RA-sik) duct runs up through the chest and empties into the blood through a large vein near the left side of the neck.</li> <li><strong>The right lymphatic duct:</strong> It collects lymph from the right side of the neck, chest, and arm, and empties into a large vein near the right side of the neck.</li> </ul> <div class="rs_skip rs_preserve"><!-- TinyMCE Fix --> <script src="//familysurvey.org/misc/javascript/js_apps/video/kh-video-metadata.js" type="text/javascript"></script> <script src="//familysurvey.org/misc/javascript/js_apps/video/kh-video-controller.js" type="text/javascript"></script> <script src="//familysurvey.org/misc/javascript/js_apps/video/single-how-the-lymphatic-system-works-en.js" type="text/javascript"></script> </div>El bazo y el sistema linfáticoEl bazo forma parte del sistema linfático, que es una extensa red de drenaje. Las funciones del sistema linfático consisten en mantener los líquidos corporales en equilibrio y defender al cuerpo de las infecciones. https://kidshealth.org/ws/RadyChildrens/es/parents/spleen-lymphatic-esp.html/75075c29-c9b5-4f12-90fd-1a79a31ee9cd
BloodHere are the basics about the life-sustaining fluid called blood.https://kidshealth.org/ws/RadyChildrens/en/parents/blood.html/79380405-c704-478c-a739-1d19c414015b
Cat Scratch DiseaseCat scratch disease is an infection that causes swelling of the lymph nodes after a cat scratch or bite. Learn about signs and symptoms, prevention, treatment, and more.https://kidshealth.org/ws/RadyChildrens/en/parents/cat-scratch.html/221b1239-1e24-4fe5-be04-8247c6d1d5b5
ChylothoraxA chlylothorax happens when chyle (lymphatic fluid) collects in the space around a lung.https://kidshealth.org/ws/RadyChildrens/en/parents/chylothorax.html/6a7f60a3-b453-4b19-b818-31fff8dd746c
Chylous AscitesChylous ascites is when chyle collects in the belly. Depending on what's causing it, doctors can treat chylous ascites and often cure it.https://kidshealth.org/ws/RadyChildrens/en/parents/chylous-ascites.html/6015512b-efd0-4501-8a52-e605ef752a73
ChyluriaChyluria is when there is chyle in the pee. Depending on what's causing it, chyluria can be treated and often can be cured.https://kidshealth.org/ws/RadyChildrens/en/parents/chyluria.html/3544293e-209b-4547-bab1-b719ad4429d3
Hodgkin LymphomaHodgkin lymphoma is a type of cancer that affects the lymphatic system. Most kids and teens who get Hodgkin lymphoma get better.https://kidshealth.org/ws/RadyChildrens/en/parents/hodgkin.html/209edaaf-59b9-44c7-94aa-327cb1bcda5d
Immune SystemThe immune system, composed of special cells, proteins, tissues, and organs that protect against germs and microorganisms, is the body's defense against disease.https://kidshealth.org/ws/RadyChildrens/en/parents/immune.html/d5495b69-ecfe-4b16-a87f-a9f5664e71d6
Lymphatic MalformationsA lymphatic malformation is a clump of lymph vessels that form a growing spongy cluster. They're unusual growths, but are not cancerous.https://kidshealth.org/ws/RadyChildrens/en/parents/lymphatic-malformations.html/5c921081-78b3-44c2-b4ce-04ce41cc824a
LymphomaLymphoma is cancer that begins in the body's lymphatic tissue. It's a common type of cancer in children, but most recover from it.https://kidshealth.org/ws/RadyChildrens/en/parents/cancer-lymphoma.html/0ad821a9-0139-4995-81e6-6c365a632f00
Mononucleosis (Mono)It's sometimes called "the kissing disease," but kissing is just one of the ways that someone can catch mono.https://kidshealth.org/ws/RadyChildrens/en/teens/mononucleosis.html/2ce95611-a0cc-4e5c-9306-e916dcebc77c
Non-Hodgkin (Non-Hodgkin's) Lymphoma Non-Hodgkin lymphoma (also called non-Hodgkin's lymphoma) is a is a cancer of the lymphatic system. The majority of kids with this type of cancer are cured.https://kidshealth.org/ws/RadyChildrens/en/parents/non-hodgkin.html/02e2a63f-7130-4457-bc47-386f2eec991b
Spleen and Lymphatic SystemThe lymphatic system is an extensive drainage network that helps keep bodily fluid levels in balance and defends the body against infections.https://kidshealth.org/ws/RadyChildrens/en/teens/spleen.html/e8bb4409-b076-452d-88a9-95109093f178
TonsillectomyA tonsillectomy is surgery to remove the tonsils. It's one of the most common surgeries kids and teens get. Find out more.https://kidshealth.org/ws/RadyChildrens/en/parents/tonsil.html/60fb67a5-1acd-49af-859d-7a37c9f09bb2
TonsillitisIf your tonsils get infected, it can make your throat feel very sore. Find out more in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/tonsillitis.html/25e7a13a-51d0-44b7-ad38-224a93eb3a8a
What Are Glands?You've heard of glands, but what are they? Find out in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/glands.html/18e35f17-fa0b-4977-b705-dff0c7e529c7
Word! LymphLymph is a clear fluid that flows through its own vessels located throughout the body.https://kidshealth.org/ws/RadyChildrens/en/kids/word-lymph.html/9f42b366-fc14-48e3-a407-8a9b665eed0c
Word! Lymph NodeYour wonderful lymph nodes! Lymph nodes are little round or bean-shaped bumps that you usually can't feel unless they become swollen.https://kidshealth.org/ws/RadyChildrens/en/kids/word-lymph-node.html/4871aa78-48e9-4add-a634-d1479962b4b7
Your Immune SystemThe immune system keeps you healthy. How does it work? Find out in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/immune.html/6b9fad76-c866-450e-81d9-1e625343744f
kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-immunologykh:genre-articlekh:primaryClinicalDesignation-immunologyBody Basicshttps://kidshealth.org/ws/RadyChildrens/en/parents/general/body-basics/3113dcac-be5e-44dd-842b-232a50bfd496Body Basics: Cancerhttps://kidshealth.org/ws/RadyChildrens/en/parents/cancer-center/body-basics/d4ed9bbd-3f41-4885-a3e2-6d755d332de2Body Basics: Sports Medicinehttps://kidshealth.org/ws/RadyChildrens/en/parents/sports-medicine-center/body-basics/bf343536-f9b0-49b1-8690-95fd2bff9a42Body Basics: Cerebral Palsyhttps://kidshealth.org/ws/RadyChildrens/en/parents/cerebralpalsy-center/cp-bb/2d58aab5-7b9d-45d2-bb45-49f5c3613e1bhttps://kidshealth.org/EN/images/illustrations/lymphnodesNeck-415x233-rd4-enIL.png