What are the organelles inside a cell and what do they do? And what are organelles anyway?
How does hearing work and why does it sometimes not?
How does touch work? What happens when it doesn't?
Why do teeth fall out? And why do they stay in? What are cavities and how do braces work?
What does the heart do? How does it do that? Make your own working model!
How do you get air into your lungs? Why do you need a diaphragm?
How do the organs of digestion fit together to nourish your body? Make your own model out of clay!
What are muscles and how do they allow us to move?
How did we come up with 8 senses? What are they?
What is taste? How does a stuffy nose affect it?
Why do we have different kinds of teeth and how do dentists count them?
What is the brain and how is it organized?
What does the heart do and why is it so important?
What do the lungs do and how do they do it?
What are the different kinds of bones and what are their jobs?
What are the parts of the human eye and how do they allow us to see?
What does your inner ear have to do with being dizzy? What is vertigo and why are there rocks in your head?
How to dentists fill out dental charts?
How does speech happen and what areas of the body are involved? (Hint: it's not just the vocal cords!)
What makes blood red? What else does blood do?
How do all the organs of the GI system work together to nourish you?
What the different kinds of joints and what are their jobs?