Lymphatic - Lymphatic Overview The circulatory system...

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Lymphatic
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Overview The circulatory system consists of the  cardiovascular system and the lymphatic  system. The lymphatic system consists of the  lymphatic vessels and the lymphoid organs. The function of the lymphatic system is to: Return excess fluid from the intracellular space to  the venous circulation. Serve as the anatomical seat of the immune  system.
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Lymphatic Vessels Lymphatic vessels are similar to veins. Smallest lymphatic vessels are lymphatic  capillaries. Lymphatic capillaries join to form  lymphatic collecting vessels. These join to form lymphatic trunks and  ducts. Lymphatic trunks empty into the venous  circulation near the heart.
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Lymphatic Vessels
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Lymphatic Capillaries Lymphatic capillaries are blind ended  vessels that form networks mirroring the  structure of cardiovascular capillaries. They have simple squamous epithelial  walls. The cells at the end of these capillaries  overlap to form simple valves. Collagen filaments anchor these cells to  the surrounding connective tissue.
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Lymphatic Capillaries
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Lymph Formation Hydrostatic pressure in the interstitial  space presses on the unanchored portion  of the capillary wall, causing the valve to  open. Excess interstitial fluid flows into the  capillary and flows away from the blind  end. The resulting fluid is called lymph once it  enters the lymphatic vessels. Composition similar to plasma with much  less protein.
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Specialized lymphatic capillaries in the  intestinal mucosa absorb lipid globules. These lipid globules suspended in lymph  form a milky fluid called chyle. This chyle is transported to the venous 
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Lymphatic - Lymphatic Overview The circulatory system...

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