10.16.13 part b Kin 272 class notes- Movement based on filtration out of capillary into interstitial fluid- Water turning into lymph- Lymph is interstitial fluid that came out of water filtrated out of a capillary- Lymphatic capillaryo Terminary lymphaticso Strewn throughout peripheral tissueso Resources so that interstitial spaces aren’t overrun with fluid- Lymphatic vesselso Branch into larger vesselso Terminal lymphatics branch into small lymphatic vessels- Lymphatic capillary o Branches further into small lymphatic vesselso Small lymphatic vessels Slightly larger in diameter than capillaries are Carrying lymph towards the torso/trunk Branching to try to travel They are more similar in structure to med. Size veins They contain one way valves Endothelial lining Identical to functioning of veins Branch into major lymphatic collecting vesselo Major lymphatic collecting vessel Two collecting systems - Superficial and deep- Collect lymph from the small lymphatic vessels Deeper layers of body (muscles, deep arteries and veins) – deep collecting vessels Small lymphatic vessels superficial collecting vessels Two categories based on where they collect from Larger in diameter than smaller collecting vessels Venous side system System of movement- Small- Major collecting vesselso These all are then going to be converged togetherto form lymphatic trunks- Lymphatic collecting vessels closer to trunk (thoracic cavity) merge together to form lymphatic trunko Regions that are just barely starting to leave thoracic cavityo Distal ends, lymphatic capillaries & small lymphatic vesselso Collecting vessels – merge into handful of trunkso Lymphatic trunks merge into 1 of 2 lymphatic ductso 2 lymphatic ducts right lymphatic duct thoracic ducto all of these trunks will move into one of these ^^o identical to the way that the blood moves through the veins relies on respiratory pump, muscular system pump, and one way valves!o Movement of lymph 1. Respiratory system pump 2. Muscular system pump 3. One way valves- Thoracic ducto Gets lymph from lower ½ of the body Below the diaphragm Whole left sideo Connects to the junction of internal/external left jugular veins- Right lymphatic ducto Gets lymph from… Right side of body Above the diaphragmo Connects to right subclavian vein- Lymphatic system in terms of its fluid…o Lymph travels through lymphatic vessels until it gets to end and gets dumped into circulatory systemo Came from fluid (water) filtered out of capillary based on hydrostatic fluido Takes stuff with ito Gets cleaned, processed, dumped into venous system to become part of plasma againo This process takes some of plasma indirectly, filtering it, cleaning it (bacteria, pathogens, viruses…)o Purified fluid put back into plasma, ALL CLEAN!- Lymphatic vessels have lymphatic tissues and lymphatic organs- Lymphatic tissues & lymphatic organs:o Collections of lymphocytes, connective tissue, mass bundles of connective tissue, phagocytes, WBCso Strewn throughout lymphatic vesselso Tissues & organs clean the lymph and spit it out the other sideo Remove impurities From inside of lymphatic system- Lymphatic tissueso Connective tissues dominated by lymphocyteso They differ that it’s a bundle of connective tissue packed with lymphocyteso Minimally clean, get rid of pathogens…o Focus on mucosa associated lymphoid tissue (MALT)o tonsils- Lymphatic organso Greater number of WBCs and lymphocyteso More developedo Same thing with nerves, blood flow supply, other WBC’so Major: Lymph nodes Spleen Thymus- All of these components are connected by lymphatic
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