Home | Links | Contact Us | About Us | Bookmark
Medical Forum Search :
 
   Homepage      News      Health Topics     Health Directories      Medical Forum      Dictionary  
Health Forum    Infectious Diseases
Health Discussion Forum

 What can I give to my six year old daughter who has a sore throat?
She woke up this morning with one and I want to stop it before it progresses into a full blown cold. help please....


 Non-promiscous & never been a drug user. Recently contracted hepatitis c & very scared any advice ?
I feel depressed, discouraged, angry, confused.....etc !!...


 My question if any doctors are online.How long should i wait before doing anything to my gallstones?
I have multiple gallstones in the gallbladder and in the common bile duct that measures at 1.7 mm in ...


 I have the stomach flu, what should I eat??
I woke up this morning with, what I think is, the stomach flu. I tried to drink some water and eat some plain white bread and I couldn't even hold that down. I've been told Gatorade is ...


 My infant son of 10 months has a running nose all the time..?
My infant son of 10 months has a running nose all the time..even if we live in a city where there is not much cold...You doint even require a sweater in the day...may be early morning there is bit ...


 Staph infection?
ok...if you have already gotten staph infection, are you immune to it? i heard it is really deadly and there arent any cures for it. it is going around on the east coast...and thats where my bf is. ...


 How can I help decrease the spread of staph in my area?
there are a lot of reported cases of staph in the town I live in...how can I help prevent it, for myself and others?...


 My boyfriend had a urinary tract infection how can this be medicated?
...


 I have a eye stye that is spreading what do I do?
I went to the eye doctor he gave me a cream to put on my eye the first stye burst and now I have one on the top eye lid should I go back to the doctor or just keep using the ointment?...


 Toddler son had chickenpox 6 weeks ago since then one thing after another colds coughs viral infections why?
...


 I have a fever, but i feel fine. should i still go to school?
...


 What is the best way to prevent the spread of infectious diseases in public, such as the flu?
blog.worldpublicrestrooms....


 Can you list me more ways to get hiv?
i already know you can get it is by blood,needles and someone else having ...


 Ever suspect the annual flu shot business is a scam?
it always makes me sick. how many damn new bugs do they trap each year to add to the concoction they shoot into your arm? think about all the dollars involved and the sickness it triggers. why every ...


 Terrorist doctors ? MRSA?
is there possibly a ...


 If you and your bf are both virgins can you still catch a STD?
...


 Can I find over the counter antibiotics?
...


 What is lyme disease and how can it be found in your system?
...


 Explain how hospitals and community acquired infections may occur?
...


 How long does it take for rabies to happen?
It's been two to three weeks scince i got bit. I havn't showed any real signs of symptoms, but the people on YA are telling me i have rabies!! Would i have already been foaming at the mouth ...



larrybethany
What is the white blood cells' role in fighting disease?
                     




James C
bacially there you amuine. The stop the toxins created then digest the patogen(virus or bacteria)


JACQUI S
Rating
White blood cells form a component of the blood. They help to defend the body against infectious disease and foreign materials as part of the immune system.


yakkydoc
Rating
They secrete substances to attract, engulf and destroy bacteria.


♥shushin♥
http://en.wikipedia.org/wiki/White_blood_cells


mary m
they multiply in times of infection to get rid of it


katashimon13
attaches it self to the virus/bacteria and decomposes it also produces antibodies


Chaos Theory
Rating
There are actually a different numeber of types of white blood cells. The most comon is the neutrophil, which deals with bacterial infection. It attaches itself to the bacteria, digests it and expels it.
The activity and death of not only the bacteria,but also the white blood cells produces pus.


emanzit
All white blood cells are known officially as leukocytes. White blood cells are not like normal cells in the body -- they actually act like independent, living single-cell organisms able to move and capture things on their own. White blood cells behave very much like amoeba in their movements and are able to engulf other cells and bacteria. Many white blood cells cannot divide and reproduce on their own, but instead have a factory somewhere in the body that produces them. That factory is the bone marrow.

Leukocytes are divided into three classes:

Granulocytes - Granulocytes make up 50% to 60% of all leukocytes. Granulocytes are themselves divided into three classes: neutrophils, eosinophils and basophils. Granulocytes get their name because they contain granules, and these granules contain different chemicals depending on the type of cell.

Lymphocyte - Lymphocytes make up 30% to 40% of all leukocytes. Lymphocytes come in two classes: B cells (those that mature in bone marrow) and T cells (those that mature in the thymus).

Monocyte - Monocytes make up 7% or so of all leukocytes. Monocytes evolve into macrophages.
All white blood cells start in bone marrow as stem cells. Stem cells are generic cells that can form into the many different types of leukocytes as they mature. For example, you can take a mouse, irradiate it to kill off its bone marrow's ability to produce new blood cells, and then inject stem cells into the mouse's blood stream. The stem cells will divide and differentiate into all different types of white blood cells. A "bone marrow transplant" is accomplished simply by injecting stem cells from a donor into the blood stream. The stem cells find their way, almost magically, into the marrow and make their home there.

Different Roles
Each of the different types of white blood cells have a special role in the immune system, and many are able to transform themselves in different ways. The following descriptions help to understand the roles of the different cells.
Neutrophils are by far the most common form of white blood cells that you have in your body. Your bone marrow produces trillions of them every day and releases them into the bloodstream, but their life span is short -- generally less than a day. Once in the bloodstream neutrophils can move through capillary walls into tissue. Neutorphils are attracted to foreign material, inflammation and bacteria. If you get a splinter or a cut, neutrophils will be attracted by a process called chemotaxis. Many single-celled organisms use this same process -- chemotaxis lets motile cells move toward higher concentrations of a chemical. Once a neutrophil finds a foreign particle or a bacteria it will engulf it, releasing enzymes, hydrogen peroxide and other chemicals from its granules to kill the bacteria. In a site of serious infection (where lots of bacteria have reproduced in the area), pus will form. Pus is simply dead neutrophils and other cellular debris.

Eosinophils and basophils are far less common than neutrophils. Eosinophils seem focused on parasites in the skin and the lungs, while Basophils carry histamine and therefore important (along with mast cells) to causing inflammation. From the immune system's standpoint inflammation is a good thing. It brings in more blood and it dilates capillary walls so that more immune system cells can get to the site of infection.

Of all blood cells, macrophages are the biggest (hence the name "macro"). Monocytes are released by the bone marrow, float in the bloodstream, enter tissue and turn into macrophages. Most boundary tissue has its own devoted macrophages. For example, alveolar macrophages live in the lungs and keep the lungs clean (by ingesting foreign particles like smoke and dust) and disease free (by ingesting bacteria and microbes). Macrophages are called langerhans cells when they live in the skin. Macrophages also swim freely. One of their jobs is to clean up dead neutrophils -- macropghages clean up pus, for example, as part of the healing process.

The lymphocytes handle most of the bacterial and viral infections that we get. Lymphocytes start in the bone marrow. Those destined to become B cells develop in the marrow before entering the bloodstream. T cells start in the marrow but migrate through the bloodstream to the thymus and mature there. T cells and B cells are often found in the bloodstream but tend to concentrate in lymph tissue such as the lymph nodes, the thymus and the spleen. There is also quite a bit of lymph tissue in the digestive system. B cells and T cells have different functions.

B cells, when stimulated, mature into plasma cells -- these are the cells that produce antibodies. A specific B cell is tuned to a specific germ, and when the germ is present in the body the B cell clones itself and produces millions of antibodies designed to eliminate the germ.

T cells, on the other hand, actually bump up against cells and kill them. T cells known as Killer T cells can detect cells in your body that are harboring viruses, and when it detects such a cell it kills it. Two other types of T cells, known as Helper and Suppressor T cells, help sensitize killer T cells and control the immune response.


 Enter Your Message or Comment


User Name:  
User Email:   
Post a comment:







Archive: Forum -Forum1 - Links - 1 - 2
HealthExpertAdvice does not provide medical advice, diagnosis or treatment. 0.044
Copyright (c) 2014 HealthExpertAdvice Saturday, November 1, 2014
Terms of use - Privacy Policy