Immune System by Amirah Razman https://padlet.com/90304510/ouhi7sswm5e9 en-us 2019-01-10 16:03:37 UTC 2019-01-11 15:46:35 UTC hello@padlet.com The Body's Non-Specific Defense 90304510 https://padlet.com/90304510/ouhi7sswm5e9/wish/319311922 The immune system is like a medieval castle 
(protected by a moat & high walls, with knights inside ready to attack at any moment) ]]> 2019-01-10 16:05:07 UTC https://padlet.com/90304510/ouhi7sswm5e9/wish/319311922 First Line of Defense (Physical & Chemical) 90304510 https://padlet.com/90304510/ouhi7sswm5e9/wish/319312874 Pathogens are washed out of the human body through physical means such as mucus while coughing or through urine. 

Some chemical means include sweat, tears, and saliva. They all kill pathogens. ]]> 2019-01-10 16:06:27 UTC https://padlet.com/90304510/ouhi7sswm5e9/wish/319312874 Second Line of Defense 90304510 https://padlet.com/90304510/ouhi7sswm5e9/wish/319315408 After getting a cut, chemicals called cytokines and histamines will be made, which triggers the response that white blood cells should come treat the cut. This is an example of an inflammatory reaction after getting a cut, along with red blood cells getting larger and more leaky. ]]> 2019-01-10 16:10:21 UTC https://padlet.com/90304510/ouhi7sswm5e9/wish/319315408 Third Line of Defense 90304510 https://padlet.com/90304510/ouhi7sswm5e9/wish/319318614 Four types of bad pathogens: Bacteria, viruses, fungi, parasites
What is the immune system? The immune system is a system that fights off any pathogens, which is called an immune response.
Immune responses: It involves two types of cells: B cells and T cells. B cells fit to an antibody like a lock and key, and T cells will release toxins to kill off the invading bacteria.
Memory cells: They remember the virus, so when it comes invading again, they will divide and fight the virus. ]]> 2019-01-10 16:15:34 UTC https://padlet.com/90304510/ouhi7sswm5e9/wish/319318614 Active and Passive Immunity 90304510 https://padlet.com/90304510/ouhi7sswm5e9/wish/319323290 Active immunity occurs when the response is to create memory cells. This will make the pathogen unable to infect any more parts of the body. Immunization also causes active immunity when the person comes in contact with the pathogen. 

Passive immunity occurs when antibodies are being transferred to someone who hasn't had the virus before. They only survive in body fluids, such as women's breast milk or through blood. ]]> 2019-01-10 16:23:14 UTC https://padlet.com/90304510/ouhi7sswm5e9/wish/319323290