What organ works in the liver, is shaped like a pear, and contains a word part that names another organ?

What system moves air in and out of the human body?

What is the long, coiled organ where most digestion takes place?

When you exhale, you release_____.

What increases to meet your body's increased need for oxygen when you exercise?

What maneuver moves food stuck in the throat?

What types of chemicals help break down food?

What is a watery liquid that moistens the mouth and food?

The teeth used mainly for grinding are ______.

In what part of the lungs does gas exchange occur?

What organ is very different in length than its name suggest?

What is the scientific term for the windpipe?

What is the air passage connecting the throat to the lungs?

A tough, but bendable, body material is ______.

What kind of air contains more carbon dioxide than oxygen?

What comes in four types and grows in two sets in one lifetime?

What helps you produce speech sounds?

What is the muscular tube that connects the mouth to the stomach?

WHen you inhale, the diaphragm moves ______.

Names the four types of teeth.

What substance lines your throat and helps the food slide down?

What are the thin-walled chambers in the lungs through which oxygen moves into the blood?

What is the looplike structures through which dissolved nutrients pass into the blood?

What tighten and get shorter when you inhale, but relax and get longer when you exhale?

What happens in the digestive system?