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1.4 LYMPHATIC SYSTEM

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1.4 LYMPHATIC SYSTEM. Formation Of Interstitial Fluid. Interstitial fluid/ tissue fluid Colorless liquid that filled the spaces between the cells The composition of tissue fluid is similar to plasma, but without proteins (which remain in blood capillaries). Structure of the Lymphatic System.

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formation of interstitial fluid
[email protected]Formation Of Interstitial Fluid
  • Interstitial fluid/ tissue fluid
    • Colorless liquid that filled the spaces between the cells
    • The composition of tissue fluid is similar to plasma, but without proteins (which remain in blood capillaries)
structure of the lymphatic system
[email protected]Structure of the Lymphatic System
  • Lymphatic system :
    • a network of lymph vessels running alongside the vein
  • Lymph :
    • Found in lymph vessels
    • Composition : similar to tissue fluid but with more fats. WHY?
structure of the lymphatic system1
[email protected]Structure of the Lymphatic System
  • Main structures of lymphatic system:
    • Lymphatic capillaries
    • Lymphatic vessels
    • Lymph node
    • Spleen
    • Lymphatic ducts
slide7
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Group of lymph nodes

movement of lymph within the lymphatic system
[email protected]Movement of lymph within the lymphatic system:

Lymphatic capillaries

Lymphatic vessels

Lymph nodes

Lymphatic vessels

Heart

Superior vena cava

Right subclavian vein

Right lymphatic duct

Left subclavian vein

Left lymphatic duct

The drainage of lymph from the lymphatic system back into the circulatory system

slide13
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  • Lymph is moved along the lymph vessels in the following ways:
    • Hydrostatic pressure of the interstitial fluid leaving the blood capillaries pushes the lymph along the lymphatic capillaries
    • Lymph is squeezed along the lymphatic vessels as the surrounding skeletal muscles contract during movement
    • Valves
    • Inhalation
oedema
[email protected]Oedema
  • The increase of interstitial fluid that causes the organs & tissues of the body to swell up
  • Caused by:
    • An increase in the capillary blood pressure forcing an excess fluid leakage into the interstitial spaces
    • A blockage of the lymphatic vessels which slows down the drainage of excess interstitial fluid
elephantiasis
[email protected]Elephantiasis
  • Disease caused by the blockage of the body’s lymphatic system by certain parasitic rounds worms leading to oedema
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