The human lymphatic system
Chapter 1
The body's secret plumbing
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Chapter 2
The immune training camp
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Chapter 3
From ancient humors to modern microscopes
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Chapter 4
Guardians of balance and health
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YOUR GOAL
Master of The human lymphatic system
Ch 4 · Guardians of balance and health
Fun Fact
Parasitic block: The parasitic worms that cause elephantiasis can live inside human lymphatic vessels for up to 8 years, continuously damaging the system.
Glossary
lymph node (noun)
A small, bean-shaped organ of the lymphatic system that filters foreign substances and contains disease-fighting white blood cells. Danish anatomist Thomas Bartholin first detailed these immune-filtering structures in his landmark 1652 lymphatic study.
A small, bean-shaped organ of the lymphatic system that filters foreign substances and contains disease-fighting white blood cells. Danish anatomist Thomas Bartholin first detailed these immune-filtering structures in his landmark 1652 lymphatic study.
Quiz
Which microscopic organism causes the tropical disease known as lymphatic filariasis or elephantiasis?
Quiz
Why can't dietary fats enter the blood capillaries directly from the small intestine?
Quiz
In what year did the World Health Organization launch its global program to eliminate lymphatic filariasis?
Quiz
What are the specialized lymphatic capillaries in the small intestine that absorb dietary fats called?
Quiz
What is the primary symptom of lymphedema, a condition caused by damaged lymph nodes?