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CrashCourse · 发布于 2012年5月14日
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Table of Contents 1) Zygote 2:38 2) Morula 2:53 3) Blastula 3:25 4) Radial Symmetry 4:11 5) Bilateral Symmetry 4:26 6) Gastrulation 4:52 7) Blastopore 5:02 8) Gastrula 5:17 9) Protostomes & Deuterostomes 5:33 10) Germ Layers 6:22 a) Diploblastic 6:32 b) Triploblastic 6:44 11) Biolography 7:27 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
