Question:
The allantois is an __1__dermal derivative, which grows into the __2__ as a storage space for __3__ ____. It is associated with the __4__ and __5__ ____ which are largely responsible for vascularizing the __6__; these vessels also play a vital role in the __6__'s respiratory function.
Author: Magdalena BadenhorstAnswer:
1. endo- 2. exocoelom 3. urinary excreta 4. Aa. and 5. Vv. umbilicales 6. chorion
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