Digestive system
how much time does the food stay in the stomach?
4 hours
what part of your body does it affect?
the lungs
what is the main part?
the lungs
the heart
where does the digestive system starts?
in the mouth by chewing the food
does lungs can float in the water?
yes
what does the heart do in the circulatory system?
it pumps blood
what happens with the nutrients of the food?
they go to the blood
can you live without the respiratory system?
no
blood vessels are part of the circulatory system?
yes
what happens when the things you don't need?
it will go to the intestine
What are the tiny air sacs in the lungs called?
alveoli
what happens if you cut an artery?
you die