Here is my little experiment on Human Heart. Tried various methods like incorporating GIF, video(MP4) and then finally landed with jpeg.
Here are my find-outs for working with above formats:
1. Could have done easily with GIF but the resolution wasn't that great
2. Inserting video was easy but transition wasn't smooth for each clip and due to some reason, it flickers in between (not sure if this is the articulate issue or a bug thing)
3. Then finally, used the image frame sequence which was time consuming but was worth with the smooth animation. Downside was, I couldn't work with more than 3 parts of organ because it would have been so laggy to work on with lot of images (even though I compressed the jpeg to lowest resolution)
Here is my final result.
https://360.articulate.com/review/content/9292bf58-5635-4a12-8cd3-7f4185c2cc9e/review