What is the name of the long pipe that shifts food from the back of your throat down to your stomach?

The shape of DNA is known as?
The flow of blood through your heart and around your body is called?
The bones around your chest that protect organs such as the heart are called what?
What is the name of the long pipe that shifts food from the back of your throat down to your stomach?

True or false? The two chambers at the bottom of your heart are called ventricles.
What substance are nails made of?
What is the human body’s biggest organ?
The innermost part of bones contains what?
True or false? An adult human body has over 500 bones.