Why is Flashutil 64 Adobe listed as a process in My Task manager utility with Windows 7 and IE 11

It's an artifact of sandboxing (https://en.wikipedia.org/wiki/Sandbox_(computer_security)‌).   The part of Flash Player that processes untrusted content from the web runs as a Low Integrity process.  Where Flash Player needs more privileges on the system, there's a much smaller medium-integrity process called the broker that makes those requests on behalf of the low-integrity process.  This is a defense-in-depth mechanism to make it more difficult for an attacker to exploit a crash in a way that allows them to control the larger system.