Bones & Muscles
This framework of 206 bones supports your body, protects your organs, and helps you move.
What is the skeleton (or skeletal system)?
These are the two main organs in your chest that expand and contract to help you breathe in oxygen.
What are the lungs?
This organ acts as the control center for your entire body, processing everything you think, feel, and do.
What is the brain?
This muscular pouch breaks down the food you eat using special juices and acids.
What is the stomach?
This is the body's largest organ, which acts as a protective shield against dirt and germs.
What is the skin?
These stretchy bands of tissue work across joints to pull your bones so you can walk, run, and jump.
What are muscles?
This muscular organ pumps blood continuously through your entire body.
What is the heart?
These string-like cords run through your body to send messages back and forth between your brain and your muscles.
What are nerves?
This long, winding tube is where most of the nutrients from your digested food are absorbed into your blood.
What is the small intestine?
These tiny living organisms can get inside your body and cause you to get sick.
What are germs (or bacteria/viruses)?
This is the tough, protective bony cage that surrounds and protects your brain.
What is the skull?
These are the tiny tubes that carry blood away from your heart to the rest of your body.
What are arteries?
This is the black opening in the center of your eye that lets light inside.
What is the pupil?
This is the tube that connects your mouth directly to your stomach.
What is the esophagus?
Doing this simple 20-second action with soap and water is the best way to stop the spread of germs.
What is washing your hands?
This is the place where two bones meet, such as your elbow or your knee.
What is a joint?
This invisible gas is what your body takes out of the air when you inhale to keep your cells alive.
What is oxygen?
These are the tiny bumps on your tongue that allow you to identify sweet, salty, sour, and bitter flavors.
What are taste buds?
These two bean-shaped organs filter waste out of your blood to create urine.
What are the kidneys?
This system in your body acts like a personal army to fight off infections and illnesses.
What is the immune system?
This is the soft, spongy substance inside the center of your bones where new blood cells are made.
What is bone marrow?
These specific cells in your blood give it its red color and have the job of carrying oxygen to your tissues.
What are red blood cells?
This thin, delicate membrane inside your ear vibrates when sound waves hit it.
What is the eardrum?
This large organ cleans your blood, stores energy, and produces a green fluid called bile to help digest fat.
What is the liver?
These organic substances found in food, labeled with letters like A, B, C, and D, are essential for your body to grow healthily.
What are vitamins?