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Flashcards in this deck (44)
  • What are the components of the lymphatic system?

    • Lymph
    • Lymphatic vessels
    • Lymphoid structures
    anatomy lymphatic_system
  • What are the primary lymphoid structures?

    • Thymus
    • Red bone marrow
    anatomy lymphatic_system
  • What are the secondary lymphoid structures?

    • Tonsils
    • Lymph nodes (cervical, axillary, inguinal)
    • Spleen
    • MALT (in small intestine)
    anatomy lymphatic_system
  • What are the two main lymphatic ducts?

    • Right lymphatic duct
    • Thoracic duct
    anatomy lymphatic_system
  • What is the function of valves in lymphatic vessels?

    • Prevent backflow of lymph
    • Allow forward flow of lymph
    anatomy lymphatic_system
  • What is cisterna chyli?

    A dilated sac that collects lymph from the lower body before it enters the thoracic duct.

    anatomy lymphatic_system
  • What is the function of lymphatic vessels?

    Transport lymph throughout the body and maintain fluid balance.

    anatomy lymphatic_system
  • What prevents backflow of lymph in lymphatic vessels?

    Valves in the lymphatic vessels.

    anatomy lymphatic_system
  • What are lymph nodes?

    Small, bean-shaped structures that filter lymph and house immune cells.

    anatomy lymphatic_system
  • What is MALT?

    Mucosa-associated lymphoid tissue found in the small intestine.

    anatomy lymphatic_system
  • What is the direction of lymph flow in vessels?

    Lymph flows forward through open valves and is prevented from backflow when valves are closed.

    anatomy lymphatic_system
  • What do overlapping endothelial cells in lymphatic vessels do?

    Facilitate the movement of lymph and prevent backflow.

    anatomy lymphatic_system
  • What is the function of the spleen in the lymphatic system?

    Filters blood, recycles iron, and helps mount immune responses.

    anatomy lymphatic_system
  • What is the role of tonsils in the lymphatic system?

    Help protect against pathogens entering through the mouth and nose.

    anatomy lymphatic_system
  • What are lymphatic trunks?

    Large lymphatic vessels that drain lymph from specific regions of the body.

    anatomy lymphatic_system
  • What does the lymphatic system primarily maintain?

    Fluid balance in the body by collecting and returning lymph to the bloodstream.

    anatomy lymphatic_system
  • What is the thymus responsible for?

    Maturation of T-lymphocytes (T-cells) for the immune system.

    anatomy lymphatic_system
  • What is the red bone marrow's role in the lymphatic system?

    Site of production for blood cells, including lymphocytes.

    anatomy lymphatic_system
  • What does the diagram of the lymphatic system illustrate?

    Major structures like ducts, trunks, vessels, thymus, tonsils, spleen, and lymph nodes.

    anatomy lymphatic_system
  • What are the main lymphatic ducts?

    • Right lymphatic duct
    • Thoracic duct
    anatomy lymphatic
  • What is the cisterna chyli?

    A dilated sac that collects lymph from the lower body before it enters the thoracic duct.

    anatomy lymphatic
  • What is the composition of lymph?

    • Water
    • Ions
    • Proteins (100-200 g)
    • Debris / pathogens
    anatomy lymphatic
  • How much lymph is produced daily?

    Approximately 3 L per day, which is 15% of fluid that left capillaries and is not returned.

    anatomy lymphatic
  • What prevents the backflow of lymph in vessels?

    Valves that close when lymph is not flowing forward.

    anatomy lymphatic
  • What is the function of overlapping endothelial cells in lymphatic vessels?

    They allow lymph to flow in one direction while preventing backflow.

    anatomy lymphatic
  • What are the lymphatic trunks?

    Major vessels that drain lymph from different regions of the body into the ducts.

    anatomy lymphatic
  • What is the role of lymph nodes?

    They filter lymph and are sites for immune responses.

    anatomy immune
  • What are lymphatic capillaries?

    • Present among most capillary beds
    • Dead end capillaries
    • Structure includes overlapping endothelium
    • Act as one-way valves
    • Anchoring filaments hold them in place
    anatomy lymphatic_system
  • What fluid do lymphatic capillaries collect from tissue?

    Interstitial fluid

    anatomy fluid
  • What components are involved in the capillary bed?

    • Arterioles
    • Venules
    • Tissue cells
    • Interstitial fluid
    • Lymphatic capillaries
    anatomy capillaries
  • What is the function of anchoring filaments in lymphatic capillaries?

    They hold lymphatic capillaries in place.

    anatomy lymphatic_system
  • What is the structure of lymphatic capillaries?

    • Overlapping endothelium
    • Act as one-way valves
    anatomy lymphatic_system
  • Where are lymphatic capillaries not present?

    In red bone marrow and epithelium.

    anatomy lymphatic_system
  • What does the diagram illustrate about lymphatic capillaries?

    It shows the structure within capillary beds, including arterioles, venules, and interstitial fluid.

    anatomy lymphatic_system
  • What is the thoracic duct?

    The main collecting duct of the lymphatic system.

    anatomy lymphatic
  • What is the function of lymph nodes?

    Filter lymph and house immune cells.

    anatomy immune_system
  • What does lymphatic fluid consist of?

    Excess interstitial fluid, proteins, and immune cells.

    anatomy lymphatic
  • What role do lymphatic valves play?

    Prevent backflow of lymph fluid within vessels.

    anatomy lymphatic
  • How does lymph move toward the heart?

    Through lymphatic vessels aided by valves and pumps.

    anatomy circulation
  • What are the accessory pumps in the lymphatic system?

    Skeletal muscle pump, respiratory pump, arterial pulsing, smooth muscle contraction.

    anatomy lymphatic
  • What is the structure of larger lymph vessels?

    They resemble veins with three tunics and valves.

    anatomy lymphatic
  • What is the function of endothelium in lymphatic capillaries?

    Acts as one-way valves to increase pressure inside the capillary.

    anatomy lymphatic
  • What is the main function of the lymphatic system?

    Drain excess fluids from tissues and return them to the bloodstream.

    anatomy lymphatic
  • What is depicted in the lymphatic system diagram?

    Circulation of lymph fluid from tissues to the heart via thoracic duct.

    anatomy lymphatic