The Lymphatic System 5.0 / 5 based on 1 rating ? OtherAnatomy and Histology: The lymphatic systemUniversityNone Created by: Georgia8989Created on: 17-04-18 15:23 what are the main parts of the lymphatic system? lymph fluid, lymph capillaries & vessels & ducts, lymph nodes 1 of 23 what are the functions of the lymphatic system? tissue fluid drainage, protection against disease, transport of fats 2 of 23 what does tissue fluid drainage do? drains excess plasma from the tissues/distributes fluid in the body. 3 of 23 what is the lymph fluid? formed from excess tissue fluid, which is drained into the lymph capilleries. 4 of 23 what is the composition of lymph? similar to blood plasma but contains more white blood cells, fat absorbed from the small intestine. 5 of 23 what happens in the lymph vessels? lymph is squeezed along the lymph vessels by muscle contraction, back flow is prevented by valves. 6 of 23 then where does the lymph go? it eventually gets emptied into large lymphatic ducts which drain into the blood in the subclavian veins. 7 of 23 what are the lymph nodes? they occur along the lymph vessels and contain many infection fighting white blood cells called monocytes and lymphocytes 8 of 23 how does the lymph enter the lymph node? via an afferent vessel and exits via an efferent vessel 9 of 23 what does the lymph node do before the blood is drained back into the blood stream? they filter and clean the blood 10 of 23 what do lymph nodes do in response to infection? they swell up e.g. cervical nodes in the neck 11 of 23 label the diagram of the lymph nodes on the dog label all correctly with labels spelt correctly 12 of 23 label diagram of a lymph node CORRECTLY 13 of 23 what are the 2 main types of lymphocytes that are found in the lymphatic system? T lymphocytes and B lymphocytes 14 of 23 what do T-lymphocytes do? attack pathogens directly 15 of 23 what do B lymphoctyes do? produce antibodies which immobalise pathogens 16 of 23 what are the rwst of the lymphatic organs and tissues in the animal body? Spleen, bone marrow, Thymus, Tonsils, Adenoids, Peyer's patches 17 of 23 what does the spleen do? it acts as a filter for blood as part of the immune sytsem, recycles old red blood cells, platlets and white blood cells are stored there. 18 of 23 what does the bone marrow do? prduces cells and stores fat 19 of 23 what does the thymus do? where T-lymphocytes or T cells develop and mature. 20 of 23 what are the tonsils responsible for? they sample the bacteria that comes through the nose or mouth. 21 of 23 what is the adenoids? they react to foriegn invaders in the body in the nasal cavity. 22 of 23 what does the peyer's patches do? tey monitor intestinal bacteria and make sure pathogenic bacteria dont grow in the intestines 23 of 23
Comments
No comments have yet been made