The animal phylum most like the protists that gave rise to the animal kingdom is see concept 33.1 (page 688)

Porifera

The animal phylum porifera constitute the sponges that is most like the protists that gave rise to animal kingdom. One evidence is that they have been defined as multi-celled immobile animals or metazoans that have water intake and outlet openings, which is connected by chambers lined with choanocytes or cells with whip-like flagella. Another evidence that supports this includes the lack of true tissue in sponges.

one would be wind another would be water density

voluntary muscles are controlled by the cerebellum.