Specialized lymph capillaries are associated with the vili of the small intestine. These vessels are called lacteals because the lipid they transport makes the lymph look milky. This fluid is called chyle. The lymphatic organs are the red bone marrow, the thymus gland, lymph nodes, lymph nodules, and the spleen. Lymph nodes: On its way back to the blood, lymph is filtered through lymph nodes, that are located in clusters along the pathway of the lymphatic vessels. Interstitial fluid drains into lymphatic capillaries, forming lymph. Lymph capillaries merge to form lymphatic vessels, which carry lymph into and out of structures called lymph nodes and finally back to the vascular system. Like blood capillaries, lymphatic capillaries are made of a single layer of squamous epithelial cel The Lymphatic System. By Antranik 6 Comments. The lymphatic system and immune system are very closely tied together. The lymphatic vessels are a network of vessels that are separate from but intertwine together with the blood vessels and return excess tissue fluid to the blood vascular system. The immune system is going to fight infection and foreign objects.  Three. 1) a meandering network of Lymphatic Vessels, 2) Lymph, the fluid contained in those vessels, and 3) lymph nodes that cleanse the lymph as it passes through them.  Structure of Lymphatic Vessels. Lymphatic vessels, also called lymphatics, range in size from lymphatic capillaries to large diameter lymphatic ducts. Lymphatic capillaries, also known as terminal lymphatics, consists of a complex of blind-ended, small diameter vessels that collect the lymph in the peripheral tissues. Lymph from lymph capillaries drain into two types of lymphatic vessels: 1. Superficial lymphatics that travels with superficial veins in the subcutaneous tissue of skin, lamina propria of mucosae, and areolar connective tissue of serous membranes. Lymphatic vessels called lacteals (located in the in the lining of the small intestine) absorb fats in the lining of the small intestine) absorb fats resulting from digestion, & then transport fats to the circulatory system.D. The organs of the lymphatic system help defend against disease. Lymph Flow*lymph needs help to flow through the lymph vessels*forces that help the flow are – contraction of the skeletal muscles, pressure changes due to the action of breathing muscles & contraction of smooth muscles in the walls of the larger lymphatic trunks. The flow of lymph peaks during physical exercise.C. The lymphatic system is part of the circulatory system and a vital part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph (from Latin lympha meaning water) directionally towards the heart. The other main function is that of defense in the immune system. Lymph is very similar to blood plasma: it contains lymphocytes and other white blood cells. It also contains waste products and debris of cells together with bacteria and protein. 1. The macrophages and lymphocytes within lymph nodes filter lymph and remove bacteria and cellular debris before lymph is returned to the blood. 2. Lymph nodes are also centers of lymphocyte production; these cells function in immune surveillance. (p. 386). A. The hydrostatic pressure of tissue fluid drives the entry of lymph into lymphatic capillaries. B. Forces that move blood in veins (skeletal muscle contraction, breathing movements, and contraction of smooth muscle in the walls of lymphatic trunks) are the forces that propel lymph through lymphatic vessels. From the lymphatic capillaries lymph flows into larger and large vessels as they go toward the lymphatic trunks that deliver the blood to the venous system. Pressure within these larger vessels is small and the larger vessels have one-way valves that insure that fluid flows in the right direction. Lymph from lymph capillaries drain into two types of lymphatic vessels: 1. Superficial lymphatics that travels with superficial veins in the subcutaneous tissue of skin, lamina propria of mucosae, and areolar connective tissue of serous membranes.
http://clt.astate.edu/mgilmore/lymph.htm http://antranik.org/the-lymphatic-system/ https://quizlet.com/10133354/a-p-chapter-20-flash-cards/ http://droualb.faculty.mjc.edu/Lecture%20Notes/Unit%204/Lymphatic%20tissue%20with%20figures.htm http://www.hgs.k12.va.us/anatomy_and_physiology/aandp_powerpoints/pdf_file_images/lymphaticsystem_chp16.pdf https://en.wikipedia.org/wiki/Lymphoid http://mhhe.com/biosci/ap/holeessentials/student/olc/graphics/hole06ehap_s/other/chap14outline.doc http://droualb.faculty.mjc.edu/Lecture%20Notes/Unit%204/Lymphatic%20tissue%20with%20figures.htm
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