Ch16T1-6

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Author:
aphy101
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291565
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Ch16T1-6
Updated:
2014-12-14 15:29:11
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profmwinston
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Chapter 16 Topics 1-6
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  1. ´╗┐List the 3 major organs of the lymphatic system.
    1) Heart 2) Thymus 3) Spleen
  2. These are located in lymphatic pathways and function to clean lymph of pathogens
    Lymph Nodes
  3. This organ is located in the mediastinum and is composed of lymphocytes and connective tissue, it secretes the hormone thymosins, which stimulate maturation of T cells.
    Thymus
  4. This organ is the largest lymphatic organ, and resembles a large lymph node.
    Spleen
  5. What are the 3 main functions of the lymphatic system?
    1) Fluid Balance 2) Lipid Absorption 3) Defense Against Pathogens
  6. A system of lymphatic vessels transporting fluid from interstitial spaces to the blood stream.
    Lymphatic Pathway
  7. Microscopic closed-ended tubes that extend into interstitial spaces, filled with lymph.
    Lymphatic Capillaries
  8. Similar to veins, these transport lymph from interstitial spaces to the blood stream; they lead to lymph nodes, then merge to form larger lymphatic trunks.
    Lymphatic Vessels
  9. Specialized organs from lymphatic vessels, that eventually lead to lymphatic trunks.
    Lymph Nodes
  10. These drain lymph from lymphatic vessels and are named for the regions they serve; they join one of two collecting ducts.
    Lymphatic Trunks
  11. Lymphatic trunks drain lymph into these, where lymph then enters the venous system and becomes part of plasma; there are two of them, the thoracic, and right lymphatic.
    Collecting Ducts
  12. What are the 2 collecting ducts?
    1) Thoracic 2) Right Lymphatic
  13. This collecting duct is located along side the aorta in the abdominal and thoracic cavity, and empties into the left subclavian vein.
    Thoracic Duct
  14. This collecting duct is located on the right side of the thorax and empties into the right subclavian vein.
    Right Lymphatic Duct
  15. This helps to draw water back into the blood capillaries after capillary blood pressure filters the water and molecules from plasma.
    Plasma Colloid Osmotic Pressure
  16. Lymph formation prevents the accumulation of excess tissue fluid, a condition known as what?
    Edema
  17. Describe what lymph is made of, and where it comes from.
    Capillary blood pressure filters water and molecules from plasma, then water is drawn back into capillaries due to plasma colloid osmotic pressure; filtration normally exceeds reabsorption, leading to the formation of tissue fluid, hydrostatic pressure then moves tissue fluid into lymphatic capillaries, where it becomes lymph
  18. Describe the role of plasma proteins in regard to lymph formation.
    The plasma proteins are too large to pass through the blood capillary walls, they have an osmotic effect (plasma colloid osmotic pressure) which helps draw fluid back into the blood capillaries by osmosis
  19. Describe the 2 forces and 1 structure moving lymph to the cardiovascular system.
    Muscle Pump (from skeletal muscle forces lymph throughout); Cardiovascular Pump (squeezes lymph out of the abdominal vessels into the thoracic cavity); Valves (prevent backflow of lymph)
  20. What are the consequences of lymphatic obstruction, as in a parasitic worm infestation of lymph vessels, or removal of axillary lymph nodes during a mastectomy.
    It will obstruct drainage, causing painful swelling, or edema
  21. Located along lymphatic pathways, these contain lymphocytes and macrophages, which fight pathogens.
    Lymph Nodes
  22. An indented region of a lymph node, where blood vessels and nerves join it.
    Hilium
  23. The lymphatic vessels leading to a lymph node.
    Afferent Vessels
  24. The lymphatic vessels leaving a lymph node.
    Efferent Vessels
  25. Connective tissue with many fibers that encloses a lymph node.
    Capsule
  26. The functional units of lymph nodes.
    Lymph Nodules
  27. Spaces in a lymph node that provide a network of chambers through which lymph circulates.
    Lymph Sinuses
  28. List the 7 major lymph node locations.
    1) Cervical Region 2) Axillary Region 3) Supratrochlear Region 4) Inguinal Region 5) Pelvic Cavity 6) Abdominal Cavity 7) Thoracic Cavity
  29. Lymph nodes of this region have lymphatic vessels that drain the skin of the scalp and face, and tissues of the nasal cavity and pharynx.
    Cervical Region
  30. Lymph nodes of this region have lymphatic vessels that drain the upper limbs, thorax, mammary glands, and upper abdominal wall.
    Axillary Region
  31. Lymph nodes of this region have lymphatic vessels that drain the elbow region.
    Supratrochlear Region
  32. Lymph nodes of this region have lymphatic vessels that drain the lower limbs, external genitalia, and lower abdominal wall.
    Inguinal Region
  33. Lymph nodes of this region have lymphatic vessels that drain the pelvic viscera.
    Pelvic Cavity
  34. Lymph nodes of this region have lymphatic vessels that drain the abdominal viscera.
    Abdominal Cavity
  35. Lymph nodes of this region have lymphatic vessels that drain thoracic viscera and the internal wall of the thorax.
    Thoracic Cavity

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