Description:

Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex;intricate stuff alive and healthy -- your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes;and when they’re not enough;there are phagocytes -- the neutrophils and macrophages. It also features the awesomely named natural killer cells and the inflammatory response;and we'll explain how all of these elements work together to save the day if you happen to slip on a banana peel. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Immune System 00:00 Skin as a Physical Barrier 1:47 Mucous Membranes 2:25 Phagocytes: Neutrophils and Macrophages 3:17 Natural Killer Cells 4:29 Inflammatory Response 5:16 Review 8:03 *** "Reformat" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark;Eric Kitchen;Jessica Wode;Jeffrey Thompson;Steve Marshall;Moritz Schmidt;Robert Kunz;Tim Curwick;Jason A Saslow;SR Foxley;Elliot Beter;Jacob Ash;Christian;Jan Schmid;Jirat;Christy Huddleston;Daniel Baulig;Chris Peters;Anna-Ester Volozh;Ian Dundore;Caleb Weeks -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids;CrashCourse;https://www.youtube.com/watch?v=GIJK3dwCWCw