07 Chapter 02 Part 04 Reference Systems 

Thank you sooooo much for all your videos. I started in the medical field 7 yrs ago, and every time I need to review my medterm, I come back and watch your videos again.

You are a very gifted teacher and know how to communicate things in a way that is easily understood. These videos clearly took a lot of time to make with everything typed and all but I wanted to say Thank you so much! You really helped so many people with your generosity. :)

Thank you so much! 🙏 it’s so useful. Love the teacher.

you are awesome the best doctor I have ever seen

Thank you! It's very useful.

This is great, I just subbed this video was good imam watch it a couple more times, the drawing I got in class is too confusing, Please keep these vids coming, I see this is from 2011 i'm gonna watch your videos regularly.

thank you so very much!

Thank youuuuuuuuuu

The videos are great! thank you so much!! Would you let me know what text book do you use for it?