Human Body Systems

Which system pumps blood through your body? Options: circulatory, digestive, respiratory, muscular

What important substance is replenished as blood flows through the heart? Options: iron, nitrogen, water, oxygen

As you exercise, your circulatory system works with which other system to take in oxygen? Options: muscular, digestive, respiratory, endocrine

Where does digestion start? Options: mouth, throat, stomach, intestines

Which part of your digestive system absorbs nutrients into your bloodstream? Options: stomach, intestine, mouth, bladder

What happens to what's left of our food after it goes through the intestines?

As your body works harder, what happens to your HEART rate?

What happens to your BREATHING rate if you take a rest after running a mile?

Your lungs are part of which body system? Options: circulatory, respiratory, digestive, muscular

When Dr. Jeff bends his arms to lift this weight, what is happening to his bicep muscle?