Immune System by Alison Trutwin https://padlet.com/90306877/jauhv95tbmup en-us 2019-01-10 16:06:35 UTC 2026-01-25 00:47:48 UTC hello@padlet.com 1. Body's non specific defense 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319314081      1st line of defense
2nd line of defense]]> 2019-01-10 16:08:18 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319314081 1st line of defense 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319314645 Physical barriers such as skin allow the body to easily keep out pathogens.
Chemical barriers destroy pathogens on the body's surface,  at body openings and on inner body linings.
Biological barriers are harmless bacteria that take up space so that harmful bacteria can't take up that space]]> 2019-01-10 16:09:09 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319314645 2nd line of defense 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319315341 If the skin breaks open, allowing bacteria inside, the skin and blood cells become inflamed so that it can keep more pathogens out of the body.
A fever is also a part of a second line of defense, attempting to get the pathogen out that way.]]> 2019-01-10 16:10:13 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319315341 Specific defense 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319318991 3rd line of defense]]> 2019-01-10 16:16:13 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319318991 3rd line of defense 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319319152 This defense relies on antigens in the pathogen, certain white blood cell's in the body that contain lymphocytes create a chemical thats made for different types of antigens.]]> 2019-01-10 16:16:29 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319319152 Organs in the immune system 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319320476 Bone Marrow is found in the bones and it produces white blood cells
The Thymus gland stores maturing lymphocytes
The spleen filters pathogens out of the blood stream
Tonsils trap pathogens that enter through the mouth/nose
Lymphocytes are a type of white blood cell that fights pathogens]]> 2019-01-10 16:18:53 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319320476 Two types of Lymphocytes 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319322455 T cells- two types, killer and helper. Killer T cells destroy infected/harmful cells in the body and Helper T cells activate the B cells
B cells fight infections by creating antibodies, a large Y shaped molecule that binds to the antigen.]]> 2019-01-10 16:22:00 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319322455 Memory cells 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319324096 Most T and B cells die after the infection has been cured, but some can survive for the organisms lifetime. They allow for the immune system to remember the pathogen after it's been taken care of so the immune system can eradicate it if it attacks again.]]> 2019-01-10 16:24:26 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319324096 Active immunity/Passive immunity 90306877 https://padlet.com/90306877/jauhv95tbmup/wish/319325546 Active Immunity is when the memory cells detect a antigen thats attacked before and eradicates it.
Passive is when a new virus is introduced]]> 2019-01-10 16:26:10 UTC https://padlet.com/90306877/jauhv95tbmup/wish/319325546