Because your heart is what keeps you alive without your heart you would be very sick or even not in a living condition
Your brain has nerves and those nerves run throughout your system so in that case your central nervous system control everything. It is like a director it tells your heart to pump blood it signals everything it even control your homeostasis and reflex.
The answer is true as people can identify you by your aspirations or more commonly known as Interest,Goals, and Values. They can see what kind of person you are through these few common day facts.
