Circulatory system
This organ pumps blood through the body.
What is the heart?
You breathe in oxygen and breathe out this gas.
What is carbon dioxide?
This organ starts the process of digestion.
What is the mouth?
The control center of the body.
What is the brain?
This body system contains over 600 individual parts.
What is the muscular system?
These blood vessels carry blood away from the heart.
What are arteries?
The main organ used for breathing.
What are the lungs?
This long tube moves food from the mouth to the stomach.
What is the esophagus?
This organ connects the brain to the rest of the body.
What is the spinal cord?
If stretched out, this system’s organs (especially one) could be about 22 feet long!
What is the digestive system?
The red liquid that flows through your veins.
What is blood?
The tube that connects the throat to the lungs.
What is the trachea?
This organ breaks down food with acid.
What is the stomach?
These carry messages between the body and the brain.
What are nerves?
This system sends messages faster than a race car—over 200 miles per hour!
What is the nervous system?
These tiny vessels connect arteries and veins.
What are capillaries?
These tiny air sacs in the lungs exchange oxygen and carbon dioxide.
What are alveoli?
Nutrients are absorbed in this part of the digestive system.
What is the small intestine?
The nervous system controls this type of response without you thinking.
What is a reflex?
This body part, part of the circulatory system, beats about 100,000 times per day.
What is the heart?
The main function of the circulatory system.
What is to transport oxygen, nutrients, and waste?
This large muscle helps you inhale and exhale.
What is the diaphragm?
This organ produces bile to help digest fats.
What is the liver?
The nervous system is divided into these two main parts.
What are the central and peripheral nervous systems?
You could lose up to 25% of this vital gas before your brain starts to notice.
What is oxygen?