Lymphatic System

Why is the lymphatic system not very popular compared to other systems?

The problems related to the system are hard to detect, works quietly in the background (no major organs), doesn’t have any dramatic conditions

Explain each of the three functions

Return excess fluid (lymph) to circulatory system, transport majority of lipids from digestive system, produce/circulate lymphocytes and aid the immune system

How much plasma is NOT returned to the blood vessels and is picked up by the lymphatic vessels?

10-15%

How does the lymph eventually rejoin the circulatory system?

Lymphatic vessels drain into two thoracic veins that will lead to the heart

How is lymph moved if there is no pump to power the movement?

smooth and skeletal muscles

What are some differences between blood and lymphatic vessels?

Lymphatic vessels have thin walls, have valves, larger than capillaries

Where are villi found?

small intestine

Both the blood and lymphatic vessels are in the villi. What is the name of the lymphatic vessel in the villi?

Lacteal

What nutrient does this lymphatic vessel absorb and carry?

lipids

What major vein and organ does the lymphatic system bypass?

portal vein and liver

What do you pick between fat-based toxin or protein-based toxin?

Fat-based toxin because it is faster and easier to break down since it goes through the liver unlike protein-based toxin

What is lymphadenopathy?

Enlarged lymph nodes usually due to infection/inflammation

what is lymphedema? what can cause this?

excessive fluid, called lymph, collects in tissues causing swelling, caused by medications, liver failure, salt, pregnancy

Tonsils and adenoids

lymphocytes reside here

lymph nodes

lymphocytes and other immune cells circulate and reside

appendix

lymphocytes reside here

bone marrow

lymphocytes are made here; b - cells mature here

thymus

T - cells mature here

spleen

lymphocytes reside; old erythrocytes are destroyed

Peyer’s Patches

monitoring intestinal bacteria populations and preventing the growth of pathogenic bacteria

First Fact

Caused by a worm that lives in lymphatic vessels and released eggs into circulatory system

Second Fact

It is a neglected tropical disease along with rabies and yaws

Third Fact

Most area affected by elephantiasis are poor and tropical weather

Fourth Fact

4 groups of NTDs are protozoa, bacteria, helminth, and viral, elephantiasis falls under helminth

Fifth Fact

Mosquitos (known as vectors) can bite someone and move the larvae to another person to transmit the disease