How many lymph nodes are in the human body and where are they located?

Answer 1

Lymph nodes are part of a lymph vessel system that branches throughout the human body. There are about 100 (not sure if anyone has counted them all) that end up at a point called a 'lymph node'. The lymph vessel system is part of the immune system. It's job is to filter the body of foreign debris and than at some point returns back to the blood stream. Microscopic cancer cells that seed from a 'primary tumor' have the ability to enter the lymphatic system and travel throughout the body and lodge almost anywhere.
Some notable locations for the lymph nodes are neck, groin, armpit, central chest, and abdominal cavity.

Lymphatic System
http://en.wikipedia.org/wiki/Lymphatic_system

Lymph Node
http://en.wikipedia.org/wiki/Lymph_node

Answer 2

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I'm pretty sure the lymph nodes swell when they are in production of anti-bodies. These are used to combat infection in your body. There's no way of knowing if your son is getting chronic infections from something (retainer or not), unless that something is located and cultured. I'd imagine a doctor would be much more informative and helpful than these boards. There is also the possibility of one lymph node just being a different size, the human body isn't perfect.

Answer 3

Lymph nodes can be as small as the head of a pin, or as big as an olive. There are 400-700 lymph nodes in the body, half of which are located in the abdomen. There are also a large number in your neck- 170 to 200, some people are born without as many and develop lymphedema, which is the malfunction or slowing of the lymph system.

Answer 4

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How many lymph nodes are in the human body and where are they located?

Answer 5

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