Immune system consists of what and what?



Answers:
The immune system consists of:

Skin: without this so many things could enter your body and evidently kill you. Helps guard you from bacteria and viruses.

Tears and Mucus: Contain an enzyme called lysozyme. This breaks down the wall of lots of bacteria, but not all.

Saliva: Anti-bacterial

The nasal passage and lungs are coated in mucus, germs not killed instantly are trapped in the mucus and than swallowed.

Mast cells line the nasal passages, throat, lungs and your skin. Bacteria or a virus that wants to gain entry to your body must first make it past these and they are part of your defense system.

Your immune system consists of these:
Spleen - Replaces old red blood cells, and filters the blood looking for bad cells that shouldn't be in your body.

Thymus - This is between your breastbone and your heart. Contains or produces T-cells. This can be removed and you (adult) should be fine.

Lymph System - These are found in your neck and they get checked by your doctor to see if they are swollen. Filter out bacteria.

White Blood Cells - Comes in 5 classes: Immunoglobulin A (IgA), E (IgE), G (IgG), D (IgD), M (IgM)
Detects bad cells, binds to them and helps get rid of them.

Antibodies
Complement System
Hormones
Bone Marrow - Produces new white and red cells.
immune system contains everything you are immune to
there are lots.
immunity is basically looked after by white blood corpuscles in the blood
better check wikipedia
our immune system is a fascinating system.when any germ attacks on our body they produce antibodies which fight with the germs and kill them.
your immune system is inanimate. it is made up of the white blood cell's capabilities, your own body's resistance to harmful micro organisms, etc. I agree it is amazing, but when white blood cells release antibodies it is usually because the white blood cell failed and needs backup kind of.
It depends on the classification, but it's quite broad (the above answerer has basically laid it out). here's two basic classifications

-Innate immunity plus acquired immunity
-Mechanical immunity plus humoral immunity plus cellular immunity

just to add on to the last answerer (which i'm sure is just an honest mistake), the Igs listed are immunoglobulins (antibodies), not white blood cells (leukocytes), which include lymphocytes and polymorphonucleated (PMN) cells, among others.
The immune system is your body's defense system against infection and harmful things from outside your body.

Your skin, saliva, tears and mucous membranes are the body's first defense against invasion.

Then there are the lymphoid organs, which affect growth, development, and the release of lymphocytes, phagocytes and cytotoxic cells (cytophages? all types of white blood cells), which are brought to and from different areas of the body by the blood and lymphatic vessels, which are an important part of the lymphoid organs. Each lymphoid organ plays a part in the production and activation of lymphocytes. The lymphoid organs are these:

Adenoids(2 glands at the back of the nasal passage)
Appendix
Blood vessels
Bone marrow
Lymph nodes
Lymphatic vessels
Peyer's patches (lymphoid tissue in the small intestine)
Spleen
Thymus (two lobes that join in front of the trachea behind the breast bone)
Tonsils.

Lymphocytes are produced in the bone marrow, and the ones that mature there become B cells, which produce antibodies to specific infectious microorganisms. Others mature in the thymus, becoming T cells, which kill the infectious organism by killing the body cells that are affected. T cells also release chemicals, called lymphokines, which trigger an immune response to combat cancer, or a virus, for example. Other types of white blood cells also comes into play, called phagocytes, and cytotoxic cells, which kill the infectious organism by "devouring" it.

All parts of the immune system work together in a delicate balance to keep you disease free and healthy.

There are two types of immunity. The first is Natural Immunity, which is created by the body's natural barriers (skin, urinary tract, etc.) Natural immunity is also acquired by the passing of antibodies from mother to child. The second type of immunity is Acquired Immunity, which develops through exposure to specific foreign microorganisms, toxins, and tissues, which are "remembered" by the immune system. When the foreign substance (antigen) enters the body again, the immune system "remembers" how to respond to it. Such is the case with polio vaccine. You get the shot, your body develops antibodies to it, so if you get infected with polio again, your body automatically "remembers" dealing with it before and goes into action fighing it. So it is put in check and disease does not result.
If you just want 2 components, there is innate immunity and acquired immunity, as others mentioned.

There is also another 2 - fold division, of a different type; there is humoural immunity and cell - mediated immunity.

You need to carefully consider whether you are asking about 2 types of immunity or 2 divisions within the immune system. (And why just 2?)
Very good question, for those of you in S.Diego area recommended are UCSDs classes and lab classes in this field. Did you know that your immune cells are actually "checked" in the thymus for not attacking "self" ?. Some immunologists feel that the complexity of the immune system is proof of God !

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