Your Immune System: Natural Born Killer - Crash Course Biology #32

Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Table of Contents 1) Innate Immune System 1:45 a) Mucous Membranes 2:54 b) Inflammatory Response 3:44 c) Leukocytes 4:45 2) Open Letter 6:33 a) Natural Killer Cells 6:56 b) Dendritic Cells 7:57 3) Acquired Immune System 8:36 a) Antibodies 9:08 b) Lymphocytes 9:48 c) Cell-Mediated Response 10:17 d) Humoral Response 13:00 References Campbell Biology, 9th ed. http://faculty.stcc.edu/AandP/AP/AP2p... http://highered.mcgraw-hill.com/sites... This video uses the following sounds from Freesound.org: "Pigs-01.flac" by Erdie "straw slurp.wav" by dparke4 "Disgusting Slop.wav" by Ighuaran "Sonar Ping.wav" by digifishmusic "Swishes.wav" by Pogotron "swing.mp3" by morgantj Crash Course is on Patreon! You can support us directly by signing up at   / crashcourse   Want to find Crash Course elsewhere on the internet? Facebook -   / youtubecrashcourse   Twitter -   / thecrashcourse   Instagram -   / thecrashcourse   CC Kids:    / crashcoursekids