Can someone please tell me more about the physiology aspect of this program? Will it be like the first year Kin courses?

You can look at all the required courses for bio (physiology) in the course calendar, it will give you a good idea of what to expect.

From what I've heard, the bio program is less focused on human physiology, although I think there are some kin required courses.

I'm currently in the program. So far second year is really unspecialized, as in I'm taking the same courses as any other bio student would be taking, the only physiology course there is right now is Animal Physiology (Bio 2A03), which is not that great tbh. But I heard it gets more specialized third year.