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The Lymphatic System
Transcript of The Lymphatic System
What is it and What Does it Do?
The lymphatic system is a series of tubes and organs with two major jobs:
It trains and stores immune cells.
It circulates and filters fluids, fats, and immune cells through your body.
The Lymphatic vessels are similar to blood vessels, but they don't have a heart to pump fluid through them. Instead they rely on the movement of your muscles to squeeze the fluid through your body.
The Fluid comes from the spaces
between your cells.
This is called plasma
in the blood,
between your cells,
and lymph when it is in the lymphatic vessels, but it's really all the same fluid - just in different locations
Stationed all over your body, these organs filter blood and house immune cells. When you have swollen "glands" this is a sign that your lymph
nodes have been called into action to mass
produce lymphocytes and antibodies to combat an infection.
The spleen is another filter of blood, it filters out dead and dying blood cells and microbes that have been deactivated by the immune system
Tonsils and Adenoids
These are collections of lymphatic tissue similar to the lymph nodes that are stationed around one of the major entry points to the body, your mouth and nose. If they get swollen too often,
sometimes they are removed
surgically to prevent breathing
difficulty, or to treat snoring.
Immune System Tag
One team is the bacteria who will be trying to get as far as they can and do as much damage as possible.
The other team will be the immune system who will try to stop the bacteria.
Bacteria -- 10 students: Run amok
Macrophages -- 5 students: patrol for bacteria, identify them, and go get help from the Neutrophils.
Neutrophils -- 10 students: wait for the call from the Macrophages and then tag out the bacteria that match your colored arm band.
They thymus gland sits in the center of your chest below your thyroid gland and between your lungs.
It is much larger in children. Here, white blood cells learn how to tell what cells are a part of you, and what cells are invaders. This happens early in life, which is why the gland shrinks in adulthood.
Key Points about the Lymphatic system:
The lymphatic system is made up of tubes and organs.
The lymphatic system houses and trains the immune cells.
The organs of the immune system are: spleen, thymus, lymph nodes, tonsils, and adenoids.
Key points about the Immune System:
The immune system needs to be able to tell what is a part of you and what isn't.
Macrophages patrol for and eat invaders. If they get overwhelmed, they can call for help.
Neutrophils fight bacteria by eating them.
Lymphocytes (B cells and T cells) make antibodies.
Memory B cells remember invaders and provide long term immunity. This is how vaccines work.
The immune system is much more complicated than what you learned in class today.