Lymphaticccccccccccccc System DiNB!.pptx

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1. Targets: Describe the anatomy and the physiology of the lymph system. List the functions of the lymphatic vessels. Describe the structure and distribution of lymphatic vessels. Describe the general location, histological structure, and functions of lymph nodes. Name and describe the other lymphoid organs of the body. Outline the development of the lymphatic system and the lymphoid organs and tissue. The student will be able to identify major component of the lymphatic system in the human body and understand how lymph is transferred and its function in the human body. LEARNING GOAL Functions of the lymphatic system Define the following term Interstitial fluid: Fluid found in the spaces around cells. It comes from substances that leak out of blood capillaries The lymphatic system is a system of capillaries, vessels, nodes and other organs that transport a fluid called lymph from the tissues as it returns to the bloodstream. The lymphatic tissue of these organs filters and cleans the lymph of any debris, abnormal cells, or pathogens. The lymphatic system also transports fatty acids from the intestines to the circulatory system

2. TITLE It is derived from blood plasma as fluids pass through capillary walls at the arterial end. As the interstitial fluid begins to accumulate, it is picked up and removed by tiny lymphatic vessels and returned to the blood. How is lymph fluid formed? TITLE What two systems does the lymphatic system overlap with?. Lymphoid and Immune system Lymphatic fluid flows in one direction. Eventually it enters the blood at the ... right lymphatic duct and thoracic duct.

3. Move the text boxes to where the fit the diagram. The green arrows indicate the lymphatic flow

4. ORGANS/STRUCTURES Identify the function and structure of the following: Tonsils- filter out germs that enter through your nose or mouth to protect the rest of your body from infection. Lymph nodes- distinct bean-shaped structures that "filter" lymph fluid as it is moved toward the circulatory system Spleen - stores and filters blood and makes white blood cells that protect you from infection Thymus- support the immune system, especially during early life. It produces and matures T-cells, a type of white blood cell that plays a crucial role in fighting infections and diseases

5. WHITE BLOOD CELLS White blood cells originate in this location in the bone marrow Lymphocytes are specialized white blood cells of which their are different types. Contrast the functions of the following lymphocytes. T Cells- control your body’s immune system response and directly attack and kill infected cells and tumor cells. B Cells- make antibodies NK cells- destroy infected and diseased cells, like cancer cells. How are macrophages (a monocyte) different from a lymphocyte is that whereas lymphocytes destroy invading microorganisms in a specific manner, macrophages, which are phagocytes, destroy microorganisms through phagocytosis in innate immunity.

6. LYMPH NODES AND SPLEEN Review information about lymph nodes and the spleen. Explain why these would become swollen when the lymph fluid passes through them. If your lymph nodes are damaged or removed, your lymphatic system may not be able to collect and distribute the excess fluid from your tissues. Instead, lymph fluid builds up in your tissues, causing them to swell. Why would someone have their tonsils removed? usually treat infections, sleep apnea or breathing problems