I recently completed Introductory Human Physiology. It is the second physiology course I have taken and it was pretty difficult. There is so much to human physiology that the courses do not have much overlap.
For example, I have also done a bunch of courses in diet and nutrition. But we did very little on metabolism in this course. Instead, we were treated to a deep dive on how the kidneys make urine. I did nail one module, the nervous system, thanks to my biopsychology background, which I think is the only exam I achieved 100% on the first attempt. But I got through them all in the end.
Anyway, now that I have studied physiology, I guess this makes me a physician?