How much of the air your breathe is oxygen
How does air first enter your body
What is the system that connects notes, lungs, and tubes called?
What party of the body is divided into two bronchial tubes
Air that you exhale is filled with what gas
Air that we breathe in is rich in what gas
The exchange of of carbon dioxide for oxygen takes place in what part of the body
red blood cells
how is the oxygen we breath delivered to the cells in the body
What is the large muscle that contracts to bring air into the lungs
through the veins
After red blood cells relsease their oxygen, how do the red blood cells flow back to the heart
How do cells repair damage and grow
What do cells produce when they use energy to release oxygen from sugar
oxygen and food
What do all living organisms need to stay alive
What are the small blood vessels that blood cells travel through in a single file
What does your disgestive system change the nourishing food you eat into
cell wastes that contain nitrogen
What is produced when cells break down nitrogen
crossing into the capillaries
How does waste leave the cells and enter the body
What organ in your body releases salts and extra water
What part of your body releases carbon dioxide
What is produced slowly but constantly by the body and stored temporarily in the urinary bladder
How does the body release excrete water on warm days
About how many tiny tubes in the kidney filter waste from the blood
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