Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and help make it possible for our bodies to function. Table of Contents 1) Respiratory System 00:48 2) Simple Diffusion 00:55 3) Respiratory Anatomy 02:35 a) Trachea to Capillaries 03:10 4) Lung Function & Thoracic Diaphragm 04:37 5) Circulatory System 05:35 6) Circulatory Anatomy 05:54 a) Left Ventricle to Capillary Beds 06:50 b) Veins to Left Atrium 08:46 7) Endotherms & Ectotherms 09:20 References: http://www.khanacademy.org/science/biology/v/circulatory-system-and-the-heart http://www.khanacademy.org/science/biology/v/the-lungs-and-pulmonary-system http://www.ideacenter.org/stuff/contentmgr/files/38ed8a0c6db7a4f1a37e405922c364bd/miscdocs/vertebratehearts.pdf This video uses the following sounds from Freesound.org: "00559 deep breathing 1.wav" by Robinhood76 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids