Immune System

Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

The immune system is the body’s natural defense system that helps fight infections. The organs of the immune system include:

  • The tonsils, which are on either side of the throat at the back of the throat. The tonsils help make antibodies that fight infections.
  • Lymph nodes and lymphatics, which are found throughout the body. The lymphatics carry fluid, nutrients, and waste material between the body tissues and the bloodstream. The lymph nodes filter lymph fluid as it flows through them, trapping bacteria, viruses, and other foreign substances, which are then destroyed by special white blood cells called lymphocytes.
  • Thymus gland, which is found in the upper chest at the bottom of the neck, behind the breastbone. The thymus helps make antibodies that fight infection.
  • Bone marrow, which is found mainly inside the long bones, vertebrae, and pelvic bones of the body. The marrow makes white blood cells that destroy bacteria, viruses, and other organisms that cause infection.
  • Spleen, which is found in the upper left side of the abdomen. The spleen supports the immune system by helping it to recognize bacteria and other foreign substances and destroying them.
By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD – Internal Medicine
Specialist Medical Reviewer W. David Colby IV, MSc, MD, FRCPC – Infectious Disease
Last Revised December 30, 2011

WebMD Medical Reference from Healthwise

Last Updated: December 30, 2011

This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

1 Comment

  1. Pingback: Game, set, relapse! | Ireland, Multiple Sclerosis & Me

Penny for your thoughts...

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Rizhen Topic

Art, Culture, Quotes, love, Sport, Trending Topic

The Red Rush Blog

Nitric Oxide Performance Shot

Fiction All Day

Writing and Life ~ by David Ben-Ami

Im ashamed to die until i have won some victory for humanity

havau22/ IF YOU CAN'T BE THE POET, BE THE POEM...LIFE IS NOT A REHERSAL,SO LIVE IT.

joanjordan

Smile! You’re at the best WordPress.com site ever

Neuroskeptic's Blog

Just another WordPress.com weblog

Shane O'Mara's Blog

brains, behaviour, society

The Irish Brain Council

A voice for all areas of brain science in Ireland

Fevered Crenellations

Short stories, memoirs, and thoughts to get me thinking about eventually writing a book.

Sam Flegal

Illustration

Riley Amos Westbook

A fantasy Author with too much free time on his hands.

My Blog

A fine WordPress.com site

LeeLeeBot

Adventures in Brain/Cyborg Surgery

jclearningcentresgduagelugorpg

Education and Learning

HardWriteTurn

Prose, short stories, photography, and time to think.

Follow

Get every new post delivered to your Inbox.

Join 1,134 other followers

%d bloggers like this: