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What is the lymphatic system vital to?
The immune response of vertebrates.
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What are the main functions of the lymphatic system?
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What is the main role of the lymphatic system regarding pathogens?
Transporting invading pathogens to lymph nodes for immune response.
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What happens to lymph nodes during an infection?
They swell up due to immune cell activity and trapped pathogens.
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What are the main components of the lymphatic system?
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How does lymph move through lymphatic vessels?
One-way valves and muscle contractions facilitate lymph movement.
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What do lymphatic vessels contain and transport?
Immune cells (lymphocytes, phagocytes).
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What are the primary lymphoid organs?
Bone marrow and thymus.
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What is the function of primary lymphoid organs?
Production and maturation of lymphocytes (B and T cells).
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What are the secondary lymphoid organs?
Lymph nodes and spleen.
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What occurs in secondary lymphoid organs?
Activation of mature B and T cells; antigen recognition.
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What is the function of bone marrow in the lymphatic system?
Production of all blood cells, including lymphocytes.
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What is the role of the thymus in the immune system?
Maturation and development of functional T lymphocytes.
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What types of T cells are T lymphocytes differentiated into?
T-helper or cytotoxic T cells.
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Where do immature T cells travel to mature into naive T cells?
From bone marrow to thymus.
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Where do B lymphocytes undergo development?
Bone marrow (partially mature).
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Where do B lymphocytes travel to after partially maturing in the bone marrow?
Bloodstream, spleen, and other secondary lymphoid tissues.
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Where do adaptive immune responses begin?
Secondary lymphoid tissues.
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What do lymphocytes recognize and respond to?
Non-self antigens specific to their receptors.
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Where does B cell maturation complete and activation occur?
After being exposed to an antigen.
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What is the function of lymph nodes?
Act as filters for lymph, trapping foreign particles, cellular waste, toxins and pathogens.
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What is the structure of lymph nodes designed to maximize?
Chance of encounters between antigens and immune cells.
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Which cells are stationed in lymph nodes?
Some dendritic cells and macrophages.
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What do phagocytic lymphocytes present to helper T cells?
Foreign antigens after phagocytosing.
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Where do B and T lymphocytes interact in lymph nodes?
Follicles (sac) of lymph nodes.
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What does lymph node swelling indicate?
Activation and proliferation of immune cells during an infection.
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What are the functions of the spleen?
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How many of the body's lymphocytes does the spleen store?
Up to a quarter.
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What lymphocyte maturation and activation occurs in the spleen?
Site of B lymphocyte maturation and activation.
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What are the main components of lymphatic tissue?
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What is the function of a lymph node?
Filters lymph and monitors for pathogens.
Sfoglia le tue carte qui, oppure sign up to study with spaced repetition.
What is the lymphatic system vital to?
The immune response of vertebrates.
What are the main functions of the lymphatic system?
What is the main role of the lymphatic system regarding pathogens?
Transporting invading pathogens to lymph nodes for immune response.
What happens to lymph nodes during an infection?
They swell up due to immune cell activity and trapped pathogens.
What are the main components of the lymphatic system?
How does lymph move through lymphatic vessels?
One-way valves and muscle contractions facilitate lymph movement.
What do lymphatic vessels contain and transport?
Immune cells (lymphocytes, phagocytes).
What are the primary lymphoid organs?
Bone marrow and thymus.
What is the function of primary lymphoid organs?
Production and maturation of lymphocytes (B and T cells).
What are the secondary lymphoid organs?
Lymph nodes and spleen.
What occurs in secondary lymphoid organs?
Activation of mature B and T cells; antigen recognition.
What is the function of bone marrow in the lymphatic system?
Production of all blood cells, including lymphocytes.
What is the role of the thymus in the immune system?
Maturation and development of functional T lymphocytes.
What types of T cells are T lymphocytes differentiated into?
T-helper or cytotoxic T cells.
Where do immature T cells travel to mature into naive T cells?
From bone marrow to thymus.
Where do B lymphocytes undergo development?
Bone marrow (partially mature).
Where do B lymphocytes travel to after partially maturing in the bone marrow?
Bloodstream, spleen, and other secondary lymphoid tissues.
Where do adaptive immune responses begin?
Secondary lymphoid tissues.
What do lymphocytes recognize and respond to?
Non-self antigens specific to their receptors.
Where does B cell maturation complete and activation occur?
After being exposed to an antigen.
What is the function of lymph nodes?
Act as filters for lymph, trapping foreign particles, cellular waste, toxins and pathogens.
What is the structure of lymph nodes designed to maximize?
Chance of encounters between antigens and immune cells.
Which cells are stationed in lymph nodes?
Some dendritic cells and macrophages.
What do phagocytic lymphocytes present to helper T cells?
Foreign antigens after phagocytosing.
Where do B and T lymphocytes interact in lymph nodes?
Follicles (sac) of lymph nodes.
What does lymph node swelling indicate?
Activation and proliferation of immune cells during an infection.
What are the functions of the spleen?
How many of the body's lymphocytes does the spleen store?
Up to a quarter.
What lymphocyte maturation and activation occurs in the spleen?
Site of B lymphocyte maturation and activation.
What are the main components of lymphatic tissue?
What is the function of a lymph node?
Filters lymph and monitors for pathogens.
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