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What are the 2 general roles of the lymphatic system?
- 1. Circulatory role
- 2. Defence role
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Give a note on the circulatory role of the lymphatic system (4p)?
- Returns the (small) proteins lost from capillaries.
- Returns fluid lost from capillaries, maintaining blood pressure and volume.
- Removes excess tissue fluid, preventing swelling (oedema).
- Collects lipids from small intestine and transfers to the blood via subclavian veins. (Fats travel by lymphatic not circulatory system- go by the lacteal).
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What does the lymphatic system return?
- Returns the (small) proteins lost from the capillaries.
- Returns fluid lost from capillaries, maintaining blood pressure and volume.
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How does the lymphatic system help maintain blood pressure and volume?
The lymphatic system returns fluid lost from capillaries, maintaining blood pressure and volume.
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What does the lymphatic system remove?
Removes excess tissue fluid, preventing swelling (oedema).
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What does removing excess tissue fluid prevent?
Prevents swelling (oedema).
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What does the lymphatic system collect and transfer to blood via subclavian veins?
Collects lipids from small intestine and transfers to the blood via subclavian veins.
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Where are lipids collected from by the lymphatic system?
Collects lipids from small intestine and transfers to the blood via subclavian veins.
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Give a note on the defence role of the lymphatic system (3p)?
- Removes bacteria, viruses, cancer cells, cell debris and toxins from the lymph by lymph nodes.
- Lymph nodes continuously monitor lymph fit infections and cancer.
- Lymphocytes and monocytes multiply in lymph nodes during an infection.
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What are removed from lymph by lymph nodes?
Removes bacteria, viruses, cancer cells, cell debris and toxins from the lymph by lymph nodes.
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What do lymph nodes continuously monitor for?
Lymph nodes continuously monitor for infections and cancer.
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What multiplies during an infection?
Lymphocytes and monocytes multiply in lymph nodes during an infection.
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