1 / 7

Pathogens

Syarafina, Miko & Amado. Pathogens. A Pathogen is an organism or a virus that can cause a disease. Patho – disease Gen – producer. Definition. Figure 1: White Plague Pathogen obtained from http://www.coral.noaa.gov/coral_disease/white_plague_pathogen.shtml.

elyse
Télécharger la présentation

Pathogens

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Syarafina, Miko & Amado Pathogens

  2. A Pathogen is an organism or a virus that can cause a disease. Patho – disease Gen – producer Definition Figure 1: White Plague Pathogen obtained from http://www.coral.noaa.gov/coral_disease/white_plague_pathogen.shtml

  3. Outermost skin is tough and protects the body from pathogens entering. Moist that prevents the growth of fungi & bacteria. Role of The Skin Outermost Skin Figure 2: Skin Image obtained from http://www.cosmosclinic.com.au/skincare/images/skin.jpg

  4. Role of Mucous Membranes • Mucous membranes line the internal cavities that are exposed to external environment. • Mucous secreted has antiseptic properties from the enzyme lysozyme. • Traps pathogens and either swallows or expels it. Figure 2 Nasal Cavity obtained from www.sedationfacts.org

  5. Leucocytes- Neutrophils Migrate to infected tissues Like Amoeba Form vesicles Digested by lysosomes Process- Phagocytosis (form of endocytosis) Macophages http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120068/bio02.swf::Endocytosis%20and%20Exocytosis Ingestion of pathogens In blood & body tissues

  6. Figure 3: Phagocyte Image obtained from http://ttmtan.myplace.nie.edu.sg/BI6101/2004/08/pathogen/host.html

  7. Allott, Andrew, and David Mindorff. Biology - Course Companion. Oxford UP, 2007. Print. Dephoff, J. “About White Blood Cells” 30 Sept. 2009. http://www.ehow.com/about_5398467_white-blood-cells.html Fitzsimmons, Michael. “How Do White Blood Cells Work? EHow. 30 Sept. 2009. <http://www.ehow.com/how-does_5171339_do-white-blood-cells-work.html>. “Host Defenses” The Biology of Prokaryotes. 30 Sept. 2009. http://ttmtan.myplace.nie.edu.sg/BI6101/2004/08/pathogen/host.html Kivi, Rose. "How Does a Pathogen Enter Your Body?" EHow. Web. 29 Sept. 2009. <http://www.ehow.com/how-does_4574044_pathogen-enter-body.html>. Williams, Brian. “How Do Phagocytes Destroy Microscopic Invaders?” EHow. 30 Sept. 2009. <http://www.ehow.com/how-does_5179866_do-phagocytes-destroy-microscopic-invaders.html>. Bibliography:

More Related