Ummmm... no. The brain does not regulate the heart. The brain regulates all involuntary functions in the body except the heart. That function is controlled by the heart itself. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles. The SA node sets the rate and rhythm of your heartbeat. I can only imagine what else you are wrong about.My example using Flora implied cognition for Fauna may also not be a part of the CNS either as you seem to believe for Fauna CNS being 100% - I do not regulate my heart beat my brain does, my brain does not tell me the difference between right and wrong my Spirit does - my Spirit may persist without my brain. some who develop their Spirits anyway.
Yes, your brain regulates your heart, as well as many of your body's other natural functions. And as your brain dies, all those functions -- along with any cognition you may have -- inevitably cease. After all, we're not flowers, and our "cognition" is quite different from theirs.
Your "spirit" may very well persist without your brain. Nobody knows for certain. But until I see compelling evidence that "spirits" actually exist, I'll maintain my skepticism and stand by my original statement.