Has mastered a subject and has sufficient experience
I would argue that the quality of service given after waiting super LONG is inadequate in a healthcare industry.
Personally, I turned 17 a few months back and I had to get an allergy shot(no it didn't hurt XD) but my parents wasted so much time signing documentations probably like half an hour and the shot itself took like one minute and I was out of the office..
Answer:
In the heart, the most abundant glucose transporters are GLUT1 and GLUT4. GLUT1 mainly localizes on plasma membrane, and is responsible for a significant component of basal cardiac glucose uptake.