Questions and Answers
What is the job of the thymus?
Site of T-lymphocyte maturation.
What is the job of lymph nodes?
Filters lymph.
What is the job of the spleen?
Filters blood; storage of platelets and erythrocytes.
The right lymphatic duct receives lymph from all body regions, except the _____
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Which lymphatic system organ involutes and becomes nonfunctional as aging occurs?
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What is not a function of the lymph node?
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What are the two collecting ducts that drain the lymphatic trunks?
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What causes the formation of lymph to increase?
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What are the primary functions of lymph?
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Lymphatic capillaries are not found where?
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Lymphatic capillaries are unique in that they depend on _____ to prevent collapse.
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T-lymphocytes are named according to the _____ gland where they become immunologically mature.
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The thymus continues to grow until a person reaches _____, at which point it reaches a maximum weight of 30-50 grams.
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What are the main groups of tonsils in the body?
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Lymphatic nodules are encapsulated lymphatic organs.
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Study Notes
Thymus
- Site of T-lymphocyte maturation, crucial for immune system development.
- Involutes with age, becoming less functional after puberty.
- Reaches maximum weight of 30-50 grams around puberty.
Lymph Nodes
- Function primarily to filter lymph and trap foreign particles.
- Do not produce red blood cells; this is not a function of lymph nodes.
Spleen
- Responsible for filtering blood and storing platelets and erythrocytes.
Lymphatic Ducts
- Right lymphatic duct collects lymph from upper body regions, excluding lower limbs.
- Thoracic duct and right lymphatic duct are the two main collecting ducts that drain lymphatic trunks.
Lymph Formation
- Increases due to rising hydrostatic pressure in interstitial fluid, enhancing lymph production.
Lymphatic Capillaries
- Absent in epithelia; play a key role in fluid balance and immune function.
- Unique structure with anchoring filaments that prevent collapse under pressure.
T-Lymphocytes
- Class of white blood cells, named after the thymus gland where they gain immunological maturity.
Tonsils
- Main groups include pharyngeal tonsil, palatine tonsil, and lingual tonsil.
Lymphatic Nodules
- Are not encapsulated; differ from encapsulated lymphatic organs like lymph nodes and spleen.
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Description
Test your knowledge of the lymphatic system with these flashcards covering key organs and their functions. This quiz focuses on the roles of the thymus, lymph nodes, spleen, and lymphatic ducts. Perfect for biology students looking to enhance their understanding of human anatomy.
