structure & functions of lymphatic system
TRANSCRIPT
Ingredients of lymph
• Water• Protein molecules• White blood cells – leucocytes• Waste• Lymphocytes• Fat molecules• Bacteria and viruses
Connection between blood and lymph
• 1. Blood capillary• 2. Oxygen out• 3. Plasma comes out• 4. Absorbed into cells• 5. Tissue fluid bathes cells• 6. Passes into lymph vessels
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Group work
• Group 1: Functions of the system• Group 2: Components of the system• Group 3: Structure and function of
lymph nodes• Group 4: The effects of poor
lymphatic drainage
The structure of the Lymphatics
Structure Function
Lymph Fluid Transports excess fluids, waste and lymphocyte cells around the body
Lymph Capillaries
Drain away excess fluid & waste products from the tissue spaces in the body
Lymph Vessels
Carry the lymph towards the heart. Once lymph has passed through the vessels it drains into the lymph node
Lymph Nodes Acts as a filter of lymph to remove or trap any micro-organisms, cell debris or harmful substances
Right Lymphatic duct
To collect lymph from the whole body and return it to the blood stream- Right side
Thoracic duct To collect lymph from the whole body and return it to the blood stream- Left side
Thymus Promoting the development & maturation of lymphocytes in a newborn baby
Spleen Filtering out worn red blood cellDestroying micro-organisms Protection from diseaseImmune responseReleases small amounts of blood when needed
Cisterna Chyli Carries the lymph from the intestines, and the left and right lumbar trunk
Lymphoid Tissue-Tonsils
Appendix Peyer’s patches
•Help to destroy harmful invaders as we take air in the body•Protecting the lower digestive system from harmful substance•To help prevent infection
Functions of the Lymphatic
1. Filters bacteria, foreign materials, toxins and any harmful materials.
2. Drains away excess fluid to prevent water clogging of the tissues and cells.
3. Transports proteins back into the blood supply.
4. Produces lymphocytes which protect and defend the body against infection.
5. Produces antibodies to fight bacteria. 6. Absorbs fat from the intestine and
transport it to the liver.