https://padlet.com/90307382/immune_system_project Made with a dash of wit en-us 2019-01-11 15:44:26 UTC 2019-01-11 17:04:28 UTC hello@padlet.com 90307382 https://padlet.com/90307382/immune_system_project/wish/319725989 Lymphocytes are produced in the bone marrow there are two types B cells and T cells. B for bone marrow where those cells mature. T cells for thymus gland where the cells mature. Both need to be switched to fight against pathogens and create a bunch of cells to fight against a specific pathogen. ]]> 2019-01-11 15:52:55 UTC https://padlet.com/90307382/immune_system_project/wish/319725989 90303583 https://padlet.com/90307382/immune_system_project/wish/319731280 Active immunity results when an immune response to a pathogen produces memory cells. Active immunity can also result from immunization. ]]> 2019-01-11 16:02:21 UTC https://padlet.com/90307382/immune_system_project/wish/319731280 64006334 https://padlet.com/90307382/immune_system_project/wish/319733579 The body's first line of defense keeps out pathogens with the different types of barrier it is composed of. A pathogen a bacterium, virus, or other microorganism that can cause disease. They include physical, chemical, and biological barriers. The physical barrier blocks all pathogens from entering the body. It consists of having it's most important layer, the skin. The second, chemical barriers destroy pathogens on the at body openings, outer body surface, and on inner body linings. And lastly the biological barriers are living organisms that help protect the body.]]> 2019-01-11 16:06:51 UTC https://padlet.com/90307382/immune_system_project/wish/319733579 90307382 https://padlet.com/90307382/immune_system_project/wish/319734794 B cells fight infection with antibodies which are y-shaped bodies that connect with a specific antigen, once it connects the antibody destroys the antigen that is on the pathogens surface destroying the pathogen with it. T cells are either helper, or killer. Helper T cells activate B cells and killer cells destroy infected cells they come in contact with by releasing toxins. ]]> 2019-01-11 16:08:52 UTC https://padlet.com/90307382/immune_system_project/wish/319734794 90307382 https://padlet.com/90307382/immune_system_project/wish/319737832 Most B and T cells die after the infection is gone, but some stay. The cells that survive are called memory cells. The cells remember the infection so if it comes again those cells already know what to do, fighting the infection faster than the first time around. ]]> 2019-01-11 16:14:46 UTC https://padlet.com/90307382/immune_system_project/wish/319737832 64006334 https://padlet.com/90307382/immune_system_project/wish/319739172 In some cases where the pathogen does enter the body to cause a problem, the second line of defense would attack. It includes the inflammatory response, fever, and histamines. An inflammatory response is when your skin become red, swollen, and warm. To get the white blood cells to the infection, the histamines get released. And finally, to slow down bacteria growth and to get the phagocytes to circulate, the fever occurs.]]> 2019-01-11 16:17:04 UTC https://padlet.com/90307382/immune_system_project/wish/319739172 64006334 https://padlet.com/90307382/immune_system_project/wish/319765130 Passive immunity is when antibodies transfer to a person who has not been exposed to the pathogen. Passive immunity lasts only as long as the antibodies survive in body fluids. Passive immunity may be acquired by a fetus through its mother’s blood. It may also be acquired by an infant though the mother’s breast milk. Older children and adults can acquire passive immunity through the injection of antibodies.

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