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How to Build an Animal: Body Cavities

How to Build an Animal: Body Cavities

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So far in the How to Build an Animal series, we’ve been taking a look at the very things that make an animal, well, an animal. In Part One we explored types of symmetry and got oriented with the directions of cephalization. In Part Two we dove into the early development of animals, from fertilization to the gastrula. We also defined the early layers called the ectoderm, mesoderm, and endoderm and hinted at their future by revealing what tissues they are responsible for developing into.

Each of these things has been a branching point on the tree of animal life. Now it’s time for another.

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In the spirit of reconciliation, Audible acknowledges the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their elders past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.