Immune System:
What Are The Immune System?
The immune system is a network of cells, tissues, and organs that work non stop everyday just to be prepare for the attacks of foreign bacteria. The immune system’s job is to keep out for bacteria out, preventing it from entering into our blood stream or to detect them and destroy it before you get sick.
Immune System Respond?
When a pathogens tries to invades your body, it probably won't get much chance against the white blood cells(lymphocytes). The lymphocytes is like a group of army marching to detect the foreign invaders. The white blood cells will always be moving to detect for bacteria, especially when you have a injury. More pathogens would be entering from the place where you got injured and also the same for white blood cells.
The immune system is a network of cells, tissues, and organs that work non stop everyday just to be prepare for the attacks of foreign bacteria. The immune system’s job is to keep out for bacteria out, preventing it from entering into our blood stream or to detect them and destroy it before you get sick.
Immune System Respond?
When a pathogens tries to invades your body, it probably won't get much chance against the white blood cells(lymphocytes). The lymphocytes is like a group of army marching to detect the foreign invaders. The white blood cells will always be moving to detect for bacteria, especially when you have a injury. More pathogens would be entering from the place where you got injured and also the same for white blood cells.
What are Pathogens?
Pathogens is a bacteria that reproduces if you are infected. It can cause many types of illness that it can be a bit of a pain, because if your body doesn't recognize any of these bacteria that you are infected with. It may take quite a while to cure.
Immune System Protection Against Pathogens
Skin: The skin of on your body is one of the main protection against the pathogens. The skin helps to protects your body from the pathogens.
Nose: The nose is another protection from the pathogens and the mucus in the nose traps all the pathogens that you breath in every second.
Stomach Acid: Even though there is this kind of protection in or on your body, but there will be some pathogens that will get pass through the protection and that is when the stomach acids will help. The reason is that, the acid juice is able to kill all the pathogens in one go.
Immune System Lines of Defenses Mind map:
1st Line of Defense:
The 1st line of defense are any thing that is responsible for defending something with that tries to enter your body. It is also like a barrier that are suppose to help preventing pathogens from entering. Some of the 1st line of defense are nail, hair, mucus, skin and etc.
2nd Line of Defense:
The 2nd line of defense are white blood cells in simple and what it does is to bring all the lymphocytes to where you got a cut. Getting a cut means that the 1st line of defense had been passed through by the pathogens and so the 2nd line have to work much harder to kill of all the pathogen. Incase you get infected by the bacteria.
3rd Line of Defense
The 3rd line of defense are just antibodies are quite similar to the 2nd line of defense. But the difference is that T- cell and B- cells are located in different places. As for T - cells they are found in the thymus and the B - cells are found in the bone marrow.
What are Phagocytes?
Phagocytes are a class of white blood cells that can eat up pathogens. For example if a pathogens entered into your blood strem, the phagocytes is like a detecter that find pathogens and engulf them before you knowing it. So now I will explain how the phagocytes engulf them. First of all the phagocytes will always be traveling around, in our blood stream non-stop tracking for pathogens. When a pathogens had been found, they have this kind of receptor that is connected to the phagocytes. All phagocytes have receptor own it's membrane and what it does is to connect with the pathogens using the receptor. Slowly bringing eating away the pathogens, so that the human body won't get sick easily.
Respond to the Topic Question:
Question: As you were inhaling air through your nose, as you do every few seconds, a droplet of water molecules containing a colony of pathogens entered your air passage. Explain and illustrate how the immune system might respond to the colony of pathogens.
Bacteria can be found anywhere on the earth, starting from the very bottom of the sea to our body. So that means that you might get infected without you knowing, but the body's immune system will quickly get rids of it. Take for an example that you had sallow the pathogens from your mucus and down goes to your stomach, the pathogens would probably be killed because of the acid in your stomach. That is strong enough to kill away all the germs that came from your mucus. But what if the pathogens had gone pass through the 1st line of defense from others places. One way that the immune system would react is to quickly sent all the lymphocytes to the place that is infected, and if there's a pathogens that are not able to detected by the 2nd line of defense. There comes the monocytes and neutrophil which are kind of like the white blood cells. It travels around the blood steam non stop looking for wounded parts of your body where bacteria had gain entries, then spread out from the walls of the blood steam. After leaving the blood steam, the monocytes change into macrophages that engulf bacteria. As for neutrophil it also engulf bacteria(pathogens). But there is also a natural killer cells do not anyhow finds a pathogens and eliminate them. But the opposite, figuring out the harmful ones and destroy body cells that had been invaded by bacteria. Releasing proteins from the membrane and creating small holes in the harmful cells destroying it's nucleus, and this is mostly what the immune system might respond.