Thank you Dr. Campbell. I am 55 years old and going back to school. Without these videos you made, I don’t think I would have passed AandP. Thank you, from Charleston, South Carolina. I really enjoyed all the videos...and I mean ALL.

You have helped me so much! You are the reason I now feel confident with anatomy and physiology. I cannot thank you enough.

thanks for sharing your expertise...

Thnku

Thank you.

❤❤

Thank you so much sir

why sperm and ovum have only 23 pair, while zygote have 46 pair?

How 47 chromosome transfer from parents to offspring