Snc4m Review

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p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Arial} span.s1 {font: 26.0px Helvetica} the first line of defense is an external or physical barrier p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Helvetica} span.s1 {font: 26.0px Arial} the human skin, if unbroken, forms an almost impenetrable barrier against microorganisms
p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Helvetica} sticky mucus that traps microorganisms and digestive enzymes in the mucus can destroy most microorganisms

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} p.p2 {margin: 7.5px 0.0px 0.0px 27.0px; text-indent: -27.0px; font: 30.0px Helvetica; min-height: 36.0px} complex network of organs, works to get rid of the infection

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} span.s1 {font: 30.0px Arial} white blood cells (called leukocytes ) seek out and destroy invaders and are produced in the lymph nodes

p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Arial} p.p2 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica; min-height: 36.0px} Macrophages (“big eaters”, pus) – engulf antigens Neutrophils - engulf antigens Natural killer (NK) cells – kill invaded cells

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} increases blood flow

p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Arial} p.p2 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Helvetica; min-height: 31.0px} Edema – swelling, pressure on nerves = pain Immune cells circulate better

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} span.s1 {font: 30.0px Arial} Lymphocytes (another class of leukocytes) can recognize antigens and direct an immune response

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} produce and display antibodies (Plasma B cells), and some also become memory B cells

p.p1 {margin: 7.5px 0.0px 0.0px 0.0px; font: 30.0px Helvetica} span.s1 {font: 30.0px Arial} Match the template with the viral antigen and kill the virus with toxins; also kill cancer cells

p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Arial} p.p2 {margin: 6.5px 0.0px 0.0px 27.0px; text-indent: -27.0px; font: 30.0px Helvetica; min-height: 36.0px} p.p3 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Helvetica} span.s1 {font: 26.0px Helvetica} span.s2 {font: 26.0px Arial} lasting protection against pathogens through the production of antibodies
can be acquired naturally, when a person recovers from an invaders and has produced antibodies against it OR
artificially, by the injection of vaccines made of dead or weaken invaders, or even isolated antigens, the body will produce antibodies to provide immunity towards the pathogen

p.p1 {margin: 6.5px 0.0px 0.0px 0.0px; font: 26.0px Helvetica} p.p2 {margin: 5.5px 0.0px 0.0px 0.0px; font: 22.0px Helvetica} p.p3 {margin: 5.5px 0.0px 0.0px 0.0px; font: 22.0px Arial} span.s1 {font: 26.0px Arial} span.s2 {font: 22.0px Arial} Proper sterilization and/or cleaning of instruments & surfaces disinfectants (chemical that kill microorganisms on surfaces) E.g., bleach Proper use of antiseptics (chemicals that can be used on the skin) e.g. mouthwash, antibacterial soap Proper use of antibacterial medication Vaccinations (dead form of pathogen) Natural human immune response

Http://sciatwci.weebly.com/uploads/5/1/4/4/5144724/germs__viruses_bacteria_and_fungi-frayermodel.pdf

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