The immune system and the nervous
The immune System & The Lymph System
The lymphatic system is composed of lymph vessels, lymph nodes, and organs. These organs include the bone marrow, the spleen, and the thymus. The lymphatic system functions to:
|Absorbs excess fluids and returns fluids to the bloodstream|
|Absorption of fat and functions the immune system|
|Helps keeping the right level of fluids and proteins in your body|
Lymphatic System in Action
Lymph nodes are part of a network of lymph vessels that extends throughout your
body. The clear yellow fluid that flows through the lymphatic vessels is
called lymph . Lymph travels through your body to a location near your
shoulders, where it drains into your circulatory systems. During its journey,
lymph is filtered through lymph nodes, where bacteria and viruses can be
trapped. These nodes are filled with white blood cells called lymphocytes.
Lymphocytes fight infections, when viruses are present, the lymphocytes
multiply rapidly and the lymph nodes are tender and swollen.
Along the lymphatic vessels are special areas,
where lymphocytes can
be recruited, mobilized, and
deployed to appropriate sites
as part of the immune response,
these sites include the lymph
nodes , tonsils, bone marrow,
spleen, liver, lungs and intestines.
From The Merck Manual of Medical information-Home
Edition ,Chapter 167, edited
by Mark H. Beers and Robert Berkow.
Copyright 1997 by Merck &Co., INC.,
Whitehouse Station, NJ.
Did you know that you can see the lymphatic system at work when you are sick. Sore lumps in your neck are noticed when you are sick . These little lumps are swollen lymph nodes that are helping you get well. You can also see this system at work when a throats infection causes the lymph nodes under the jaw to swell or when a wound in your fingertip leads to an enlarged lymph node at the elbow .Lymph nodes actually swell, because the lymphatic vessels drain the infection by carrying it to the nearest area where an immune response can be organized.