These structures, also part of the skeletal system, crush that has entered the mouth.
What are the teeth?
100
These balloon like sacs that inflate and deflate, bringing air into and out of the body.
What are the lungs?
100
These disc shaped cells transport oxygen from the lungs to the other parts of the body.
What are red blood cells?
200
Food travels down this long tube from the mouth to the stomach.
What is the esophagus?
200
Small sacks in the lungs which allow oxygen and carbon dioxide to move between the lungs and blood stream.
What are aveoli?
200
Double Jeopardy: These blood cells are a vital part of the body's immune system.
What are white blood cells?
300
The millions of tiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed.
What are the villi?
300
This chemical is in the air we breathe and we need it to survive.
What is oxygen?
300
The chamber in the heart that pushes blood out of the heart and to the other parts of the body.
What is the ventricle?
400
This chemical is exhaled by animals, but plants "breathe" it in and use it to produce oxygen.
What is carbon dioxide?
400
Part of the circulatory system and a vital part of the immune system that carries a clear fluid called lymph towards the heart.
What is the lymphatic system?
500
These chambers bring blood into the heart from elsewhere in the body.